[单项选择]Because weekend sailors can not always the wind, many sailboats have auxiliary engines.


A. bear upon
B. hold upon
C. count upon
D. come upon

[单项选择]Because weekend sailors can not always the wind, many sailboats have auxiliary engines.


A. bear upon
B. hold upon
C. count upon
D. come upon

[单项选择]Wind motion can be observed in the atmosphere by ______ the trails of meteors passing through it.


A. to watch
B. watching
C. watched
D. watch

[单项选择]One should always remember that appearances can be
A. wrong
B. mistaken
C. incorrect
D. false

[单项选择]

Passage Two
What is wind You can feel it, and you can sometimes hear it, too. You can’t see the wind, but you can see all kinds of plants and flowers moving in the wind. Grass moves in the wind. So do trees. What is the wind It is moving air.
What makes the air move Think of two places. They may be close to each other, or they may be far away. The air is cold in one place. But it is hot in the other. Warm air pushes up high into the sky. It goes higher than the cold air. The colder air then moves into the place where the warmer air used to be. The moving air is wind.
Winds move clouds in the sky. A nice day can turn cloudy in a short while. Sometimes the clouds are big and dark. Big, dark clouds hold a lot of water. Soon it begins to rain.
High winds can make a storm come fast. They can make a lot of noise, too. Sometimes they sound like a train going by. Very high winds have picked up big things like cars and trucks from the ground. S
A. Wind makes cold air higher and warm air lower.
B. Wind can even carry cars and trucks to the sky.
C. Wind makes all kinds of plants and flowers moving.
D. Wind moves clouds in the sky and brings about rain.

[单项选择]Last weekend, we went to our ______ because he is iii.

[单项选择]Meetings can not always succeed in solving problems under discussion.
A. 会议并不是总可以通过讨论来成功地解决问题。
B. 会议并非总能成功地解决被讨论的问题。
C. 并非所有的会议最后都能取得成功，并经过讨论解决问题。
D. 多数情况下会议并不能成功地通过讨论来解决问题。