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【单选题】
The gravitational force exerted by the Sun on the Earth holds the Earth in an orbit around the Sun. Let us assume that the orbit is perfectly circular. The work done by this gravitational force during a short time interval in which the Earth moves through a displacement in its orbital path isA.
zero
B.
positive
C.
negative
D.
impossible to determine
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举一反三
【单选题】. 有如下嵌套语句 if(a
A.
k=(a
B.
k=(a
C.
k=(a
D.
k=(a
【单选题】Which sounds more casual and less definite?
A.
I'm hoping you can lend me £10.
B.
I hope you can lend me £10.
【单选题】Which sentence sounds more professional?
A.
“Do you get me?”
B.
“Do you understand?”
C.
“Does that make sense?”
D.
“Understanding?”
【单选题】Which sentence sounds more polite?
A.
“Door!”
B.
“Hold it”
C.
“Hold the door!”
D.
“Would you mind holding the door?”
【单选题】Under the influence of alcohol, people will ______.
A.
have a clear mind and be more aggressive
B.
commit self-destructive behavior
C.
suffer both natural and unnatural death
D.
be more alert and excited
【简答题】用所给词的适当形式填空. 1. The polar bears are kind of (aggress). 2. He was____ (surprise) to find no one in the zoo. 3. Zoos are like (live) textbooks for young people. 4. He ________(use) to be a teacher. 5. H...
【判断题】It is forbiddent carry any kind of weapons ,ammunitions,aggress ivetools and inflammable ,explosive ,corrosive poisonous articles on the plane 任何武器弹药，攻击性的器械一级易燃，易爆，腐蚀性的放射性的，有毒的物品都严禁带上飞机。
A.
正确
B.
错误
【单选题】Which sentence sounds more professional?
A.
“Hold on. I’m busy”
B.
“Hold the line for minute.”
C.
“Hold! I cannot talk to you now.”
D.
“May I put you on hold?”
【单选题】One of Freudian theories is that
A.
humans are half beast and half angel
B.
sexual and aggressive impulses are the basic human drives
C.
humans always fight with the complicated nature
D.
sex is only part of human bewilderments
相关题目：
【单选题】. 有如下嵌套语句 if(a
A.
k=(a
B.
k=(a
C.
k=(a
D.
k=(a