单项选择题
1、 Only then_________that she had made a mistake．
A．she realized
B．did she reahze
C．had she realized
D．she had realized


2、 When the president and his delegation left the country, __________           of people were at the airport to__________
A．thousand ; see off them
B．thousands ; see off them
C．thousand ; see them off
D．thousands ; see them off


3、 Progress so far has been very good．__________, we are sure that the project will be completed on time．
A．However
B．Otherwise
C．Therefore
D．Besides


4、 图2-2是一个沿x轴正方向传播的简谐横波在t=0时的波形图，则A点的振动图像是图2-3中的（　　）


A．(a)
B．(b)
C．(c)
D．(d)


5、 设数列{an}的通项公式为an=2(n+1)+1，则此数列一定
A．是公差为2的等差数列
B．是公差为3的等差数列
C．是公差为1的等差数列
D．不是等差数列


6、 方程为(x+1)²+(y-2)²=4的圆与两个坐标轴的公共点共有
A．1个
B．2个
C．3个
D．4个


7、You're always late. You __________ late three times this week.
A．are being
B．were
C．had been
D．have been


8、 阅读下列短文，回答题。
Our eating habits are very important for good health and a strong body. There are times when most of us would rather eat sweets and ice-cream than meat and rice. Sweets and ice-cream are not bad if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite(食欲).
It is important for us to eat our meals at the same time each day. When we feel hungry, it is a sign that our body needs food. When we feel angry or excited, we may not want to eat. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not eat the bread, it showed that he was telling lies. Although this seems very strange and rather foolish, it is indeed a very good way of finding out the fact. A man who is worrying about something has difficulty in eating anything dry. Because he is worrying, he loses his appetite and does not want to eat.
We must have good eating habits because__________.
A．we want to eat more
B．we want to enjoy our meals
C．we want to be healthy
D．we want to grow up quickly


填空题
9、 将NH₄HCO₃加热，产生的气体依次通过固态Na₂O₂、Ca(OH)₂饱和溶液和浓硫酸，充分反应后，后得到的气体是____


简答题
10、回答题：
提示：一顾客去鞋店买皮鞋，店员问清楚鞋码大小后，给顾客拿鞋。顾客试穿后，认为合适，要买下它，并将鞋款交给店员。店员将应找回的零钱退给顾客。
Shop-assistant :____ 51____ ?
Customer:I want to buy a pair of leather shoes.
Shop-assistant : ____52.____
Customer: Size 40, please.
Shop-assistant : Yes,sir. Here you are.
Customer:May I try them on?
Shop-assistant : ____53 ____?
Customer:Ok. I'll take this pair.____54____ ?
Shop-assistant : Forty-five Yuan, sir.
Customer:Here is the money,fifty Yuan.
Shop-assistant :Thank you.____55____. Good-bye,sir.
C ustomer : Good- bye.
第51题_________

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