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问题 单项选择题

内膜系统是指细胞基质环境中由单层膜包被的细胞器，其在功能上相互关联，在细胞器结构的发生上密切相关，下列哪种细胞器结构不属于内膜系统（）。

A.高尔基体

B.内质网

C.溶酶体

D.核糖体

答案

参考答案：D

选择题

    读“地球自转线速度随纬度变化图”（甲）和“地球公转速度变化图”（乙），对地球运动速度的描述，正确的是：

    ① 地球自转的线速度自赤道向两极递减

    ②M点的地理纬度可能是30°

    ③地球公转的线速度和角速度都是7月初最慢，1月初最快

    ④N点的月份是一月初 [ ]

A、③④

B、①③

C、①②

D、②③

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单项选择题

For the people who have never traveled across the Atlantic the voyage is a fantasy. But for the people who cross it frequently one crossing of the Atlantic is very much like another, and they do not make the voyage for the (56) of its interest. Most of us are quite happy when we feel (57) to go to bed and pleased when the journey (58) . On the first night this time I felt especially lazy and went to bed (59) earlier than usual. When I (60) my cabin, I was surprised (61) that I was to have a companion during my trip, which made me feel a little unhappy. I had expected (62) but there was a suitcase (63) mine in the opposite corner. I wondered who he could be and what he would be like. Soon afterwards he came in. He was the sort of man you might meet (64) , except that he was wearing (65) good clothes that I made up my mind that we would not (66) whoever he was and did not say (67) . As I had expected, he did not talk to me either but went to bed immediately.
I suppose I slept for several hours because when I woke up it was already the middle of the night. I felt cold but covered (68) as well as I could and tried to go back to sleep. Then I realized that a (69) was coming from the window opposite. I thought perhaps I had forgotten (70) the door, so I got up (71) the door but found it already locked from the inside. The cold air was coming from the window opposite. I crossed the room and (72) the moon shone through it on to the other bed. (73) there. It took me a minute or two to (74) the door myself. I realized that my companion (75) through the window into the sea.

A. treat together well B. pass together well
C. get on well together D. go by well together
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