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问题 单项选择题 A2型题

在家兔动脉血压实验中，夹闭一侧颈总动脉引起全身动脉血压升高，其主要原因是（）.

A．血管容积减少，相对血容量增多 

B．颈动脉窦受到牵拉刺激 

C．颈动脉体受到牵拉刺激 

D．颈动脉窦内压力降低 

E．颈动脉体内压力降低

答案

参考答案：D

填空题

现代城市里常在主要街道上安装噪声监测设备，若某一时刻显示如图所示的数字68，它的单位是______；当附近有车辆驶过时，显示屏上的数字将______（填“增大”“减小”或“不变”）
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单项选择题

Many students have hobbies, such as reading, painting, growing vegetables in their gardens, and looking after animals. Some hobbies are relaxing and (16) are creative. Hobbies can develop your interests and help you learn new skills.
David Smith is a student, and his hobby is writing. (17) the sumer of 2000, he spent four weeks on a summer camp. As well as the usual activities, such as sailing, climbing and mountain biking, there was a writing workshop with a professional (18) "She asked us to imagine that we were in a story. Then we wrote about our (19) at the camp. "
In senior high school David wrote a story about teenage life, and it (20) as a book in 2003. Many teenagers love his book, and as a result, David has become a (21) young writer.
David has been very lucky (22) his hobby has brought him enjoyment and success, but he is (23) interested in many other things. "I like playing volleyball, too" says David. "I spend some of my free time playing volleyball for my school team. (24) I’ll write more books in the future, but I’m not sure. "
It’s sometimes difficult (25) that we shouldn’t spend all our time on our favourite hobby. There are many other interesting things to do in life, and we should try to do something new or different.

Ⅱ. 完形填空/Cloze

A．remember

B．remembers

C．remembered

D．to remember
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