下述哪种疾病在X线胸片上不引起透明度增加（） A.肺气肿 B.肺栓塞 C.肺动脉高压

Saturday, June 16th

In the morning, we went camping in Green Natural Park. We were happy because it was a sunny day. We were looking forward to a wonderful two-day holiday. On the way, we kept singing and making jokes.

However, in the afternoon, when we finished our picnic at one o’clock, it was dark and windy. Soon, there was a shower(阵雨). Unluckily, none(没有人) of us brought an umbrella. We ran about but we could find no place to hide.

Twenty minutes passed and it was still raining. There were hours to go before we reached the campsite (野营地). It was even worse that our small compass (指南针) showed that we went to the wrong way. We lost our way!

We had to make a quick decision（决定）because it was raining heavily. Chris said we could put up a tent to hide in, so Mary and Tom helped to put up the tent. Chris and I tried to make a fire to keep us warm. But we weren’t able to light(点燃) the fire, because everything was wet. We dried ourselves, chatted and waited inside the tent. At about five o’clock, it stopped raining. We decided to give up (放弃)the camping trip because all of us were very tired.

This camping trip may not be successful (成功的) but we know each other better. And the most important thing I’ve learned from this camping trip is team spirit(合作精神).

Answer the following questions with No More Than 4 Words

小题1:Where did they go camping?

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小题2: When did they finish their picnic?

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小题3:Why weren’t they able to light(点燃) the fire?

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小题4:How long did the rain last(持续)?

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小题5:What’s the most important thing that the writer has learned from the camping trip?

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女性，28岁，月经规律，现停经39天， * * 出血8天，伴下腹隐痛。检查：子宫体略大，质中，双附件无明显肿块及压痛，尿HCG（绒毛膜促性腺激素）阳性。如果人工流产吸出物见到下列哪一项可初步排除宫外孕（）

A.蜕膜组织

B.绒毛

C.胎儿

D.增生过长的子宫内膜

E.萎缩的子宫内膜

钻孔时，当钻尖快要钻穿工件时，应()钻尖下降速度

A.减慢

B.加快

C.保持不变

D.先慢后快

期货价格出现同方向连续涨跌停板的，期货交易所可以采用的化解风险措施不包括（）。

A．调整涨跌停板幅度

B．强行平仓

C．提高交易保证金标准

D．按一定原则减仓

A．班B．附近C．回答D．祝E．声音F．经常

在儿子______里，他应该是长得最高的。