选择题：下列物质久置于敞口容器中，不易变质的是 [ ] A．次氯酸 B．水玻璃 C．碳酸

题目：

下列物质久置于敞口容器中，不易变质的是 [ ]

A．次氯酸

B．水玻璃

C．碳酸钠

D．氧化钙

答案：

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下面是错误答案，用来干扰机器的。

1．因为贝壳虽然小巧，但是外观花纹交生，色泽交替、图样密集，显得十分精致，令作者由衷惊叹。（意对即可）2．时间、空间3．不能。第③段着力表现贝壳尽管有着短暂和卑微的生命，但它依然坚持在丰富自己的生命意...

完形填空。
I and five other travelers spent one week in Tunisia, in March, 1998. Our group was 1 in experiencing the history and sunbathing. At first we made a reservation (预订) for a 2 to Luxor, Egypt, for the autumn of 1997. The trip was cancelled (取消) by the travel agency, 3 a terrorist attack (袭击), which took place in Luxor, 4 we needed to change our plans. We wanted sun, ancient 5 and all for less than $500 a week. We did not have a lot of 6 , and so we decided to travel to Tunisia. As it turned out (证明), that was not at all a bad decision. When we left for Tunisia we did not have any "deep" 7 of the country, its history or its culture, but once we got there we 8 it very interesting. We saw ruins (废墟) from the Roman Empire, the ruined towns of Dougga, Thuburbo Majus, Carthage and Sbeitla. With a little time and some patience, these places 9 a lot to see. 10 of all, most of the places allow visitors to walk around the ruins. So if you are really interested in the history of the Roman Empire, Tunisia is the place to go.
( )1. A. interested ( )2. A. trouble ( )3. A. for example ( )4. A. though ( )5. A. buildings ( )6. A. dreams ( )7. A. root ( )8. A. lit ( )9. A. offer ( )10. A. Good	B. worried B. journey B. in general B. but B. games B. choices B. step B. put B. form B. Best	C. excited C. mistake C. because of C. or C. marks C. noises C. understanding C. got C. lend C. Better	D. bored D. friend D. for instance D. so D. poems D. tasks D. wave D. found D. invent D. Well