地形因子对生物的作用主要是（ ）

【名词&注释】

形容词(adjective)、外国人(foreigner)、比较级(comparative degree)、第一个(first)、“解决问题”、迎刃而解(readily solved)

[单选题]地形因子对生物的作用主要是（ ）

A. 间接作用
B. 能量交换作用
C. 直接作用
D. 物质交换作用

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学习资料：

[单选题]Under his arm ______a great package.

A. was he carrying
B. he was carrying
C. carrying he
D. was he carried

[单选题]The foreigners once ______their products to our company at a ______higher price.

A. sent, very
B. lent, still
C. sold, much
D. showed, more

[单选题]If they are willing to lend us the money we need,all our problems will be__

A. solved
B. caused
C. covered
D. met

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