阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

　　The National Weather Science at Ryan Airport announced the following weather report Saturday night for Baton Ronge and the area nearby. It will be partly cloudy through Monday with a chance of afternoon showers. High Sunday and Monday will be in mid 80s, with a low Sunday night in the upper 50s. Winds will be southeastly 10 to 15 miles per hour, getting weak at night, probability of rain will be 20 percent Sunday.

　　On the coast, winds will be southeastly 10 to 15 knots and seas will run 24 feet. Winds and seas will be 3 feet high near a few thunder showers. High tide at 1 : 00 P. M. , low tide at 12 : 24 A.M.

　　Record high for May 22 was 93 posted in 1956 and record low was 51 recorded in 1954.Normally temperatures should be different from 86 to 65 degrees.

　　There will be scattered afternoon thundershowers Tuesday and over the west part of the state Thursday. Tuesday through Thursday, lows will be in the mid to upper 70s, with highs in the mid to upper 80s.

　　High Saturday was 86, with a low of 65.

1．This weather report probably appeared in a ________ .

[　　]

2．This report says that ________ .

[　　]

A．records will be broken

B．there will be no rain in this period

C．skies will be partially cloudy on Sunday and Monday

D．temperatures will be lower than normal for the time of year

3．Which of the following statements is not false according to the report?

[　　]

A．Winds go southeastly 10 to 15 miles per hour.

B．Winds will get weak at night.

C．Winds will increase their speed at night.

D．Winds will be stronger in the daytime than at night.

4．The lowest recorded temperature for the date was ________ .

[　　]

The effects of rapid travel on the body are actually far more disturbing than we realize. Jet Lag is not a psychological consequence of having to readjust to a different time zone. It is due to changes in the body’s physiological regulatory mechanisms, specifically the hormonal systems, in a different environment.
Now that we understand what Jet Lag is, we can go some way to overcome it. A great number of the body’s events are scheduled to occur at a certain time of day. Naturally these have to be regulated, and there are two regulatory systems which interact.
One timing system comes from the evidence of our senses and stomachs, and the periodicity we experience when living in a particular time zone. The other belongs in our internal clocks (the major one of which may be physically located in a part of the brain called the suprachiasmatic nucleus) which, left alone, would tie the body to a 25-hour rhythm. Normally the two timers are in step, and the surroundings tend to regularize the internal clocks to the more convenient 24-hour period.
  If, however, you move the whole body to a time zone which is four hours different, the two clocks will be out of step, like two alarm clocks which are normally set together, but which have been reset a few hours apart. Whereas the two clocks would normally sound their alarms together, now they ring at different times. Similarly, the body can be set for evening while the sun is rising.
In time the physiological system will reset itself, but it does take time. One easily monitored rhythm is palm sweating. A man flown to a time zone different by 10 hours will take eight days to readjust his palm sweat. Blood pressure, which is also rhythmical, takes four days to readjust.
What can we do about it? It is not feasible to wait four days until the body is used to the new time zone. Fortunately there is a short cut. It relies on two things-the power of the stomach to regulate the timing of other events, and the pharmacological actions of coffee. The basic assumptions are:
Coffee delays the body clock in the morning, and advances it at night. Coffee at mid-afternoon is neutral. Protein in meals stimulates wakefulness, while carbohydrates promote sleep. Putting food into an empty stomach helps synchronize the body clock.
46. What is jet lag associated with?
A. Psychological change.           B. Physiological change.
C. Inexperience of rapid travel.      D. Unfamiliar environment.
47. What helps us to adjust to a 24-hour rhythm?
A. Alarm clock.                  B. Suprachiasmatic nucleus in our brain.
C. Signals from outside of the body.   D. Our senses and stomachs.
48. What do we know from the fifth paragraph?
A. A person moving to a different time zone will suffer from high blood pressure.
B. A person moving to a different time zone will sweat a lot.
C. Moving to a different time zone will affect both palm sweat and blood pressure.
D. If the rhythm of blood pressure and palm sweat are not in step, there will be jet lag.
49. What should we do if we want to stay awake?
A. To take coffee at three o’clock in the afternoon.
B. To have meals that contain lots of protein.
C. To have some carbohydrate drinks.
D. To stop putting food into our stomach.
50. How can we cure jet lag?
A. To sleep for days.      B. To wait for self-recovery.
C. To drink tea.          D. To get something to eat.

The effects of rapid travel on the body are actually far more disturbing than we realize. Jet Lag is not a psychological consequence of having to readjust to a different time zone. It is due to changes in the body’s physiological regulatory mechanisms, specifically the hormonal systems, in a different environment.

     Now that we understand what Jet Lag is, we can go some way to overcome it. A great number of the body’s events are scheduled to occur at a certain time of day. Naturally these have to be regulated, and there are two regulatory systems which interact.

    One timing system comes from the evidence of our senses and stomachs, and the periodicity we experience when living in a particular time zone. The other belongs in our internal clocks (the major one of which may be physically located in a part of the brain called the suprachiasmatic nucleus) which, left alone, would tie the body to a 25-hour rhythm. Normally the two timers are in step, and the surroundings tend to regularize the internal clocks to the more convenient 24-hour period.

     If, however, you move the whole body to a time zone which is four hours different, the two clocks will be out of step, like two alarm clocks which are normally set together, but which have been reset a few hours apart. Whereas the two clocks would normally sound their alarms together, now they ring at different times. Similarly, the body can be set for evening while the sun is rising.

     In time the physiological system will reset itself, but it does take time. One easily monitored rhythm is palm sweating. A man flown to a time zone different by 10 hours will take eight days to readjust his palm sweat. Blood pressure, which is also rhythmical, takes four days to readjust.

What can we do about it? It is not feasible to wait four days until the body is used to the new time zone. Fortunately there is a short cut. It relies on two things-the power of the stomach to regulate the timing of other events, and the pharmacological actions of coffee. The basic assumptions are:

Coffee delays the body clock in the morning, and advances it at night. Coffee at mid-afternoon is neutral. Protein in meals stimulates wakefulness, while carbohydrates promote sleep. Putting food into an empty stomach helps synchronize the body clock.

46. What is jet lag associated with?

  A. Psychological change.            B. Physiological change.

  C. Inexperience of rapid travel.       D. Unfamiliar environment.

47. What helps us to adjust to a 24-hour rhythm?

  A. Alarm clock.                   B. Suprachiasmatic nucleus in our brain.

  C. Signals from outside of the body.   D. Our senses and stomachs.

48. What do we know from the fifth paragraph?

  A. A person moving to a different time zone will suffer from high blood pressure.

  B. A person moving to a different time zone will sweat a lot.

  C. Moving to a different time zone will affect both palm sweat and blood pressure.

  D. If the rhythm of blood pressure and palm sweat are not in step, there will be jet lag.

49. What should we do if we want to stay awake?

  A. To take coffee at three o’clock in the afternoon.

  B. To have meals that contain lots of protein.

  C. To have some carbohydrate drinks.

  D. To stop putting food into our stomach.

50. How can we cure jet lag?

   A. To sleep for days.      B. To wait for self-recovery.

   C. To drink tea.           D. To get something to eat.

The effects of rapid travel on the body are actually far more disturbing than we realize. Jet Lag is not a psychological consequence of having to readjust to a different time zone. It is due to changes in the body’s physiological regulatory mechanisms, specifically the hormonal systems, in a different environment.

     Now that we understand what Jet Lag is, we can go some way to overcome it. A great number of the body’s events are scheduled to occur at a certain time of day. Naturally these have to be regulated, and there are two regulatory systems which interact.

    One timing system comes from the evidence of our senses and stomachs, and the periodicity we experience when living in a particular time zone. The other belongs in our internal clocks (the major one of which may be physically located in a part of the brain called the suprachiasmatic nucleus) which, left alone, would tie the body to a 25-hour rhythm. Normally the two timers are in step, and the surroundings tend to regularize the internal clocks to the more convenient 24-hour period.

     If, however, you move the whole body to a time zone which is four hours different, the two clocks will be out of step, like two alarm clocks which are normally set together, but which have been reset a few hours apart. Whereas the two clocks would normally sound their alarms together, now they ring at different times. Similarly, the body can be set for evening while the sun is rising.

     In time the physiological system will reset itself, but it does take time. One easily monitored rhythm is palm sweating. A man flown to a time zone different by 10 hours will take eight days to readjust his palm sweat. Blood pressure, which is also rhythmical, takes four days to readjust.

What can we do about it? It is not feasible to wait four days until the body is used to the new time zone. Fortunately there is a short cut. It relies on two things-the power of the stomach to regulate the timing of other events, and the pharmacological actions of coffee. The basic assumptions are:

Coffee delays the body clock in the morning, and advances it at night. Coffee at mid-afternoon is neutral. Protein in meals stimulates wakefulness, while carbohydrates promote sleep. Putting food into an empty stomach helps synchronize the body clock.

46. What is jet lag associated with?

  A. Psychological change.            B. Physiological change.

  C. Inexperience of rapid travel.       D. Unfamiliar environment.

47. What helps us to adjust to a 24-hour rhythm?

  A. Alarm clock.                   B. Suprachiasmatic nucleus in our brain.

  C. Signals from outside of the body.   D. Our senses and stomachs.

48. What do we know from the fifth paragraph?

  A. A person moving to a different time zone will suffer from high blood pressure.

  B. A person moving to a different time zone will sweat a lot.

  C. Moving to a different time zone will affect both palm sweat and blood pressure.

  D. If the rhythm of blood pressure and palm sweat are not in step, there will be jet lag.

49. What should we do if we want to stay awake?

  A. To take coffee at three o’clock in the afternoon.

  B. To have meals that contain lots of protein.

  C. To have some carbohydrate drinks.

  D. To stop putting food into our stomach.

50. How can we cure jet lag?

   A. To sleep for days.      B. To wait for self-recovery.

   C. To drink tea.           D. To get something to eat.