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问题 选择题

小林同学的作业中，有关西欧封建社会的说法错误的是[ ]

A．西欧封建社会的主要阶级矛盾是封建主与农奴之间的矛盾

B．西欧封建社会时期，拥有至高无上的权力的是罗马教廷

C．西欧封建社会比中国晚了大约1000年

D．西欧封建社会里拥有土地最多的是国王

答案

答案：D

选择题

植物的芽尖有个部位叫生长点，它是分生组织，其细胞特点是（　　）

A．体积小，细胞核大，细胞壁厚，分裂迅速

B．体积大，细胞核小，细胞壁厚，分裂迅速

C．体积小，细胞核大，细胞壁薄，分裂迅速

D．体积大，细胞核大，细胞壁薄，分裂迅速
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单项选择题

In the following essay, each blank has four choices. Choose the best answer and write-down on the answer sheet.

Microwave communication uses high-frequency (29) waves that travel in straightlines through the air. Because the waves cannot (30) with the curvature of the earth, they can be (31) only over short distance. Thus, microwave is a good (32) for sending data between buildings in a city or on a large college campus. For longer distances, the waves must be relayed by means of "dishes" or (33) . These can be installed on towers, highbuildings, and mountain tops.

31（）

A.transmitted 

B.transformed 

C.converted 

D.delivered
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