[单项选择]What should be done to prevent insects from eating into the water harvesting system at the bottom
A. The two bags holding the water should be put inside the metal tank.
B. The inner bags need to be replaced every two years.
C. The water harvesting system should be built on a platform.
D. A cover should be used to prevent insects from eating it.

[单项选择]What should be done to prevent insects from eating into the water harvesting system at the bottom
A. The two bags holding the water should be put inside the metal tank.
B. The inner bags need to be replaced every two years.
C. The water harvesting system should be built on a platform.
D. A cover should be used to prevent insects from eating it.

[单项选择]Why should pruning be done


A. To make the tree grow taller.
B. To improve the shape of the tree.
C. To get rid of the small branches.
D. To make the small branches thicker.

[单项选择]What should the man have done about his first appointment


A. He should have made an appointment.
B. He should have called to cancel his appointment.
C. He should have come for his appointment.
D. He should have stayed at home until he was well.

[单项选择]Perhaps I should not have done so, but I changed my mind about the new job even though I was ______ last week.
A. to be started
B. to have started
C. to have been starting
D. start

[单项选择]What he has done is far from______.


A. satisfactory
B. satisfied
C. satisfaction
D. satisfy

[单项选择]

All of followings should be done by the project manager during project control except （）

A. determine that a change has occurred
B. ensure that a change is agreed
C. make sure all changes are approved by management
D. manage changes as they occur

[单项选择]He finished all the work that should be done in a week in a ______ day.


A. lonely
B. alone
C. single
D. sole

[单项选择]Don't put off until tomorrow ______ should be done today.
A. that
B. what
C. is
D. when

[单项选择]

Passage 4
Eating in space is different from eating on earth. The food that astronauts carry with them does not look like the food you eat. Some food is carried in closed bags. It is cooked and frozen before the astronauts get it. All the water is removed from the food. In the spaceship the astronaut puts the water back. He "shoots" hot or cold water into the food bag with a special gun. He eats the food through a small hole in the bag.
Other foods come in bite size. The astronaut puts a whole piece in his mouth at once. There can be no crumbs. Crumbs would float around the spaceship and get in the way. Meat and cake often come in bite-sixed pieces. Astronauts can’ t drink water from open cups. The water would float in drops in the air. The water is put in the special gun. The astronaut shoots the water into his mouth. Eating in space is not easy. Astronauts must learn this way.

Why can't astronauts drink water from cups（）
A. The water would come from the open cups.
B. The water would spill all over their food
C. Crams would float in the cups
D. The cups would float in the air.

[单项选择]--Are you satisfied with what she has done
--Not a little. It couldn't be ______.


A. any better
B. any worse
C. the best
D. the worst

[单项选择]What attitude should we have towards the globalization process


A. Disapproving.
B. Pessimistic.
C. Critical.
D. Indifferent.