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问题 单项选择题

下列边防检查站有权阻止出境、入境的人员出境、入境的是（）

A.拒绝接受边防检查的；

B.未在限定口岸通告的；

C.国务院公安部门、国家安全部门通知不准出境、入境的；

D.以上都是

答案

参考答案：D

填空题

单词拼写。

1.Sun Tao was an excellent student in his school and he won s       soon.

2.-Jack,I'm so happy because I have passed the important exam.

  -C       to you!

3.On her birthday Kate d       her room with nice flowers and balloons,which made it very beautiful.

4.The pills are too big and bitter so I don't think I can s       them.

5.I'm very happy to have the o       to talk to you.

6.Mr.Smith will marry Miss Jones.We have received their      (邀请).

7.It's good for us to drink      (开) water.

8.All of us should make a       (贡献) to humans.

9.Please bring me some soft drink with no      (酒精).

10.He turned off the light and the room was in complete      (黑暗).

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选择题

如图是甲、乙两种物质的溶解度曲线，下列有关说法正确的是

 
[ ]

A．甲的溶解度大于乙的溶解度  

B．t2℃时，甲、乙溶液中溶质的质量分数一定相等  

C．t3℃时，甲、乙的饱和溶液分别恒温蒸发100g水，甲析出晶体的质量比乙多  

D．若100g甲的饱和溶液中含有40g甲，则此时的温度应是t1℃
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