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问题 填空题

2010年1月15日，我国迎来了大范围的日环食天象．这是本世纪我国首次出现日环食，也是未来千年内持续时间最长的一次日环食天象．美丽的日环食像一个金环挂在空中，这是光沿______形成的现象，发生这种现象时，______（选填“太阳”、“地球”或“月球”）位于中间位置．

答案

发生日食时，是太阳射向地球的光被月球挡住，地球上的人进入月球的影子区域，看不见太阳形成的，其原因是光的直线传播．

故答案是：直线传播；月球．

阅读理解

Many scientists find that colours can change people’s feelings. It’s very interesting. Some colours can make people feel relaxed，and some colours can make people feel nervous. Now，this kind of knowledge is being used in many places. For example, school walls are always painted green because green makes students feel relaxed. It is also good for the students’ eyes. Some books are also green or light blue for the same reason. Restaurant owners not only have to know how to make food，but also have to know how to make money. Here are some things they’ve learned from scientific studies. The colour red makes people hungry. Many fast food restaurants have red furniture or walls. Soft colours like pink and light blue make people feel relaxed，so they spend more time eating. Loud music may be nice at first，but it soon makes people want to leave. Hard seats also make customers want to eat quickly and leave. Many restaurants，especially fast food restaurants，use this knowledge to make customers eat faster.

小题1:How does the colour green make the students feel？

A．Hungry.

B．Nervous.

C．Angry.

D．Relaxed.小题2:How does the colour red make most people feel？

A．Hungry.

B．Comfortable.

C．Excited.

D．Worried.小题3:Which colour isn’t mentioned in this passage？

A．Green.

B．White.

C．Light blue.

D．Red.小题4:What do many fast food restaurants do？

①Play loud music. ②Play soft music. ③Have hard seats. ④Paint their walls red.

A．①②③

B．①③④

C．①②④

D．②③④小题5:What’s the best title for this passage？

A．Colour and restaurant.

B．Use colour to make money.

C．Colour and science.

D．Use colour to change feelings.
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单项选择题

刚性桩穿过厚20 m的未充分固结新近填土层，并以填土层的下卧层为桩端持力层，在其他条件相同情况下，( )作为桩端持力层时，基桩承受的下拉荷载最大。简述理由。（）

A．(A) 可塑状黏土

B．(B) 红黏土

C．(C) 残积土

D．(D) 微风化砂岩
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