问题 单项选择题

引起骨筋膜室综合征的主要发病机制()

A.骨筋膜室内压高

B.肌肉痉挛

C.细菌繁殖过盛

D.血管内膜损伤

E.主要神经损伤

答案

参考答案:A

解析: 骨筋膜室的室壁坚韧而缺乏弹性,如果室内内容物体积骤增,则室内压力急剧增加,阻断室内血液循环,使骨筋膜室内的肌肉和神经组织缺血,产生骨筋膜室综合征。

单项选择题
完形填空

Camping in your backyard is full of fun, whatever your age. It's great for keeping us relaxed. It offers chances to check the night sky and to be noisier than usual. It lets us have friends over to stay who might not fit inside the house! Follow these instructions and you'll have a night you’ll never forget!

Put up your tent.

Depending on the number of family members and guests, you may need more than one tent. Tell your friends to bring their tents if needed. Follow the instructions or check out the articles on how to put up a tent on the Internet.

Prepare your bedding.

You'II want your guests to be able to relax in comfort. Put something soft to lie on on the floor: A blow-up air mattress or thick comforters may work well. Fill the tent with soft toys and  blankets (毯子). Have lightweight sleeping bags or cotton blankets. They are especially important if you live where the night temperatures drop greatly.

Prepare a seating area.

If you have a picnic table, that would work best. If not, set up a few chairs and a small table to set out drinks and food. A simple choice is to lay out a blanket in the sun,  so that your friends can eat and talk. Be sure the grass isn 't wet!

Make memories.

Plan some activities. You're camping in the backyard, so it's time to make the most of being outdoors.

Have a camera nearby to take silly photos of you, your family members, and your friends. Take one large group shot with everyone smiling and laughing. Be sure to make copies for everyone!

小题1:Is camping in the backyard great fun?

小题2:What can we do to help relax our guests?

小题3:What is a simple choice to prepare a seating area?

小题4:How do we make memories?

小题5:What is the passage mainly about?