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【单选题】
We cannot _________on his help.A.
hope
B.
expect
C.
calculate
D.
adjust
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【简答题】Choose the correct concluding sentence. Pizza has become one of America's favorite foods. Pizza is ordered for many
various holidays and s, including Halloween, the Super Bowl, and the night
befo...
【单选题】Questions 17 to 20 are based on the passage you have just heard.
A.
People like foods of their native lands.
B.
Large cities offer international sample of foods.
C.
Even small cities offer various international foods.
D.
People eat foods of other nations to understand their culture.
【单选题】According to the article, if someone is on a diet, he ______.
A.
should not eat all the foods he loves
B.
has to eat very little
C.
may not enjoy anything he likes
D.
can enjoy various foods
【简答题】一点沿对数螺线运动r=e^aφ，它的极径以角速度ω旋转，试求极径变化率.一点沿对数螺线 运动，它的极径以角速度ω 旋转，试求极径变化率 .
【简答题】图所示电路中，VD为理想二极管。求：
【简答题】求题图所示各电路端口的伏安特性(其中二极管均为理想二极管)。
【简答题】求线性谐振子偶极跃迁的选择定则．
【单选题】If a person visits too many places in a short time, .
A.
he will have a better knowledge of other countries
B.
he will eat more various foods
C.
he will not have a good rest
D.
he will not get a true impression of any place
【简答题】B: Good morning, sir. May I take _____________? G: All right. Thank you very much. B: _____________, sir. May I have your room card? G: Certainly. _______________. B: Thank you, sir. Your room is on t...
【单选题】Your room is ___ than mine.
A.
three time big
B.
three times big
C.
three times bigger
D.
bigger three times
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