单项选择题
1、
A．A
B．B
C．C
D．D

2、
A．A
B．B
C．C
D．D


3、I'm calling to enquire about the position　　 in yesterday's China Daily.
A．advertised
B．to be advertised
C．advertising
D．having advertised


4、 “西出阳关无故人”，离阳关近的我国古代艺术宝库是（　　）
A．龙门石窟
B．莫高窟
C．云冈石窟
D．麦积山石窟


5、 At the foot of the mountain
A．a village lie
B．lies a village
C．does a village lie
D．lying a village


6、 已知数列{a_n}满足a_n+1=a_n+2，且a₁=1，那么它的通项公式a_n等于
A．2n-1
B．2n+1
C．2n-2
D．2n+2


7、 阅读下列短文，回答题。
Now satellites are helping to forecast(预报) the weather. From space,they can see any part of the earth. These satellites take pictures of the atmosphere (大气), because this is where the weather forms. These pictures are sent to weather stations on earth. Meteorologists (气象学家)can see the weather of any part of the world. From the pictures, the scientists can often see how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can report this.
So weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon,perhaps,they may be able to forecast the weather for a week or more ahead.
Satellites travel__________.
A．in space
B．in the atmosphere
C．above the ground
D．above space


8、 They decided to __________ the meeting until after Christmas.
A．put, away
B．put, down
C．put, off
D．put, up

简答题
9、




10、 将BaCl₂·nH₂O晶体2.44g溶于水，制成100 mL溶液．取此溶液25 mL，加入至50mL 0.1mol／L AgNO₃溶液中，充分反应后，恰好把Cl^-沉淀完全．计算2.44gBaCl₂·nH₂O的物质的量和n的值．

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