题目列表(包括答案和解析)
The captain________an apology to the passengers for the delay________by the bad weather.
A.gave;caused
B.gave;brought
C. made;brought
D.made;caused
We all know that certain oils are healthier than others. but your oil health goes beyond just the type.The health of your oil can be related to how you use it too.
Each type of oil has what is called a“smoke point. ”The smoke point is the specific temperature at which the oil starts to break down, or in more technical terms, its molecular structure begins to change. These molecular changes result in; changes in flavor, as well as W ww.k s 5u.com changes in nutritional value,specifically,the nutritional value of the oil starts to reduce;changing what once may have been considered an especially healthy oil,like Olive,into one that is unhealthy.
The higher an oil’s smoke point is,the higher the temperature of th
e oil can be.As a result, each type of oil should be used for the cooking method that is most appropriate to its individual smoke point and heat tolerance. Here is a quick guide for the next time you reach for your favorite oil.]
| Heat During Cooking | Oil | Best Use |
| Low to Moderate | Coconut | Baking (low heat ) Light Sauteing Pressure Cooking Salads |
| Corn | ||
| Olive | ||
| Peanut | ||
| Sesame | ||
| Walnut | ||
| Medium Heat | Macadamia Nut | Baking Sauteing Stir-Frying |
| Safflower | ||
| High Heat | Grape-seed | Deep Browning Deep-Frying |
| Sunflower | ||
| Soybean/Soy |
Note that the above table represents oils that are refined(精炼的).Most oils we buy are refined.Refined oils tend to have much higher smoke points than when they are unrefined.They also differ in nutrition and flavor.Unrefined oils are more nutritious and they tend to be much richer in flavor.
When it comes to extremely high heat cooking,always choose oils which are refined.
62.What determines whether an oil is healthy or not?
A.Whether it’s refined or not. B.Its smoke point.
C.Its molecular. D.How you use it.
63.Which of the following might be a better choice to make a healthy salad?
A.Refined walnut oil. B.Safflower oil.
C.Unrefined olive oil. D.Sunflower oil.
64.Healthy oil can become unhealthy if. according to the passage.
A.you keep it for too long
B.it is heated well beyond its smoke point
C.it is refined
D.its flavor is changed
65.The author wants to tell readers that .
A.oils are related to health
B.oils’value depends on their smoke points
C.“certain oils are healthier”is relative
D.oils’flavor and nutrition are connected
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阅读理解
HUMANS have spent years exploring space, but how much do we know about deep inside the planet on which we live? The idea of exploring the earth's core (地核)was detailed in an article called“Modest Proposal (建议)”. It was written in May by American scientist David Stevenson. It is similar idea to an American sci-fi movie that was released in March, The Core.
So, because they deal with the same topic, it wouldn't be too strange to compare a scientific report with a sci-fi movie.
Why explore
The report: The solid inner core of the earth is fluid(不固定的)and responsible for the earth's magnetic field (磁场). * Scientists don't know exactly why all this is so, nor do they know the exact make-up or temperature of the core. *
The movie: An unknown force has caused the earth's inner core to stop rotating (旋转). With the planet's magnetic field rapidly decreasing, our atmosphere starts to come apart.
The result is deadly: birds lose their ability to fly in the right direction and the earth eventually (最终)becomes like a microwave oven (微波炉), cooked by the sun.
How explore
The report: A nuclear explosion (核爆炸)would be the best way to create a hole big enough to enter the earth. The crack (裂缝)needs to be as long and as deep as several football fields, but only about 30era wide. * The event would be as powerful as an earthquake measuring 7 on the Richter Scale (里氏震级).*
At least 100,000 tons of hot iron would be poured into the crack, along with a metal probe (探测器)the size of a grapefruit (柚子).
The weight of the iron, which is much denser than earth' s outer regions, would open a gap all the way to the planet core, about 3,000kin below. The probe would fall at about 16kin per hour as the crack doses up behind it. * Stevenson said the amount of iron needed is equal to what' s produced in factories around the world in a week. *
The movie: Send a manned vehicle that looks like a windowless subway (地铁)train into the earth's core. Virgil, the ship, is made of a metal that can stand the extreme temperature and pressure found in the core.
Virgil began its journey when it was dropped in the middle of the ocean because this is where the crust (地壳)is thinnest.
What to do
The report: The weeks-long mission would measure the temperature and chemical composition (make-up)of the core.
The movie: Blow up five 200-megaton (兆吨)nuclear bombs to restart the core.
Choose the best choice according to the story________.
(1)What do the report and the movie have in common?
[ ]
A.Both deal with exploring space.
B.Both deal with going deep to the inside of the earth.
C.Both offer the same reason to explore the earth's core.
D.Both consider it possible for the core to stop rata- ring.
(2)In the movie, a nuclear explosion would ________.
[ ]
A.help man enter the earth
B.create a big crack that leads to the earth's core
C.produce hot iron
D.make the earth's core work again
(3)How long would it take the probe to reach the core according to the report? ________.
[ ]
(4)What does the underlined word“stand”mean? ________
[ ]
(5)We can infer from the passage that the core________.
[ ]
A.is in the danger of stopping rotating
B.still has a lot for us to explore
C.controls the birds' sense of directions
D.might blow up
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