【小题1】On the evening of Mid-Autumn Festival, I usually sit in the open air with my family, (欣赏)the full moon.
【小题2】I used to live in a beautiful house (包围)by many kinds of trees.
【小题3】There is a big underground railway (系统)in London.
【小题4】Eating (胡萝卜)can help you see better.
【小题5】We know that Canada’s population is only (稍微)over thirty million.
【小题6】It is important to know your own (长处)and weaknesses.
【小题7】Each (宗教)activity has it’s own belief.
【小题8】Dinosaurs laid eggs and (存在)on the earth for morn than 140 million years.
【小题9】He wandered around Tibet for a month. His experience is (难以置信).
【小题10】We visited the in our ________(宇宙飞船) many years ago.
【小题11】On his________(到达)he went straight to the counter and spoke to the clerk.
【小题12】She usually_____(结合)creative imagination with intelligence to create some wonders.
【小题13】A saying goes，“A friend in need is a friend ____(真正地，确实)．”
【小题14】It’s bad______(礼貌)to talk with your mouth full.
【小题15】With trembling hands Mr. Jackson opened the ___ (信封) and read the letter.
All plant cells arecapable of taking up water. Even dead ones do to a certain degree. Absorption（吸收）of water by dead cell walls makes wood become larger. Incommon land plants, the living cells of roots take up most of the water. Landplants without roots do exist, however. Those greenish-yellow lichens（苔藓）you see on rocks in the high mountains have no roots. Halfa billion years ago, when water plants started to enter the land, the firstland plants did not have roots.
Even among theflowering plants, one finds rootless forms. These flowering plants are “thehigher plants” because they evolved（进化）recently and arethus considered higher on the evolutionary scale（进化度）. In thePeruvian desert, there grows one of these rootless higher plants, a bromeliad.It is a relative of the pineapple. Even if this plant had roots, they would beof no use, because where the plant grows, it never rains. The plant gets itswater only from the dew（露水）it collects at night, when its leaves cool off.Such rootless plants, of course, can be moved with ease, but they will onlygrow when they are placed out in the open. If they are placed too near a house,the radiation from the heat of the house prevents the leaves from cooling andso prevents dew from forming, and the plant dies. In the southern United Statesand in Puerto Rico, one sees bromeliads growing high above the streets on theinsulation（绝缘物）of electric wires. These plants get their waterfrom rain, and the only soil they ever come in contact with is the dust thatmay blow on their leaves.
1．Woodbecomes larger because of .
A．deadcell walls B．water entering dead cells
C．thegrowth of cells D．the death of cells
2．The“bromeliad” is a plant that .
A．hasuseless roots B．is a pineapple
C．cangrow anywhere D．takes up water through its leaves
3．Themost suitable title for this passage is “ ”.
A．Absorptionof water by plants B．Rootlessplants
C．Plantsin the desert D．Higherplants
There are some very good things about open education.This way of teaching allows the students to develop their own interests in manysubjects. Open education allows students to be responsible for their owneducation. Some students do badly in traditional classrooms. The open classroommay allow them to enjoy learning. Some students will be happier in an openeducation school. They will not have to worry about grades or rules.
But many students will not do well in an openclassroom. For some students, there are too few rules. These students will dolittle in school. They will not make good use of open education. Because openeducation is so different from traditional education, these students may have aproblem of getting used to making so many choices. For many students it isimportant to have some rules in the classroom. They worry about the rules evenwhen there are no rules. Even a few rules will help this kind of students. Thelast point about open education is that some traditional teachers do not likeit. Many teachers do not believe in open education. Teachers who want to havean open classroom may have many problems at their school.
You now know what open education is. Some of its goodpoints and bad points have been explained. You may have your own opinion aboutopen education. The writer thinks that open education is a good idea, but onlyin theory. In actual fact, it may not work very well in a real class or school.The writer believes that most students, but of course not all students, wantsome structure in their classes. They want and need to have some rules. In somecases, they must be made to study some subjects. Many students are pleased tofind subjects they have to study interesting. They would not study thosesubjects if they did not have to.
Title: Open Education
Open education is a way of teaching which allows students to learn what they are 1. in without many rules.
· Open education enables students to realize they are learning for
2. , not for others.
· In open classrooms, many students don’t need to be3. of grades or rules.
· Some students find4. happiness in open classrooms compared with traditional classrooms.
· Many students cannot prove themselves as 5. in open classrooms as in traditional classrooms.
· There are so many choices for students to 6. that they can’t use open education properly.
· Some teachers are not in 7. of such way of teaching.
on open education
· Open education is just theoretical, but in a9. class or school it is not so good.
·10. of the students want some structure in their classes.
How would you like to sleep with one half your brainasleep and the other half awake? Dolphins sleep this way. Recently, scientistsat Indiana State University have discovered that ducks sleep this way too. Theyfound that ducks sleep half awake so they can rest and watch for danger at thesame time.
After putting their ducks in a row and videotapingthem, some researchers found ducks on the end of each row spent more timeasleep with one eye open, apparently looking for predators.
“The more the ducks felt threatened, the more theyslept with one eye open,” said lead author Niels C. Rattenborg, a graduatestudent at Indiana State University, Terre Haute. “The unique aspect is notthat they do it, but that they control it. When they sleep at the edge of agroup, they tend to realize greater danger, so they spend more time sleepingwith one half of their brain.” Ducks with one eye open were still awake enoughto detect predators, said the authors of the study, which appears today in thejournal Nature.
The researchers studied four groups of four ducks heldin plastic boxes, which were arranged in a row. Ducks on the end were found tosleep with one eye open 31.8 per cent of the time, compared to 12.4 percent ofthe time for ducks in the central position.
Also, ducks in the central position did not open oneeye more than the others, while ducks on each end kept the eye facing away fromthe group open 86.2 per cent of the time. Brain wave readings of the ducksshowed that the half of the brain receiving signals from the closed eyeindicated that half of the brain was sleeping. Signals from the half of thebrain receiving signals from the open eye showed a state between fully awakeand asleep.
1.The under lined word “predator” is most likely tomean .
A. an animal that is likely to be friends with ducks
B. a human being who looks after and feeds ducks
C. a scientist who does research work on animals
D. an animal that hunts, kills and eats other animals
2.Ducks at the end of each row sleep with one eye openbecause .
A. they are looking for food
B. they are watching out for danger
C. they want to enjoy the scenery
D. they are unique in their sleeping habit
3.Which of the following is true according to thepassage?
A. Ducks with one eye open at the edge can still enjoya certain degree of sleep.
B. Ducks with less sense of duty usually choose tostay in the center of a row.
C. Ducks on the northern end of a row would keep theireye facing the south open.
D. A video tape recorder was the only electronicdevice used in the experiment.