正确答案: A

正确

题目：C4植物叶的光合效率高，C3植物叶的光合效率低。( )

解析：A

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举一反三的答案和解析：

[单选题]The majority of people in the town strongly the plan to build a playground for children.

support

[单选题]DMy father was 44 and knew he wasn’t going to male it to 45. He wrote me a letter and hoped that something in it would help me for the rest of my life.

lost his father when he was young

[单选题]EFear plays no part in this latest problem．“I’m not afraid I'll lose my children．I won't lose my children. We live together, and nothing, nothing,”she repeats, her voice rising when speaking to John's lawyer, “will stop me from being with my children. A law? Year, right. Don't disturb me when it comes to my children. You are never going to win. If John wants to see them, I cannot stop him. He's their father­­—I want them to see him! However, his visit in his present condition will disturb the children's stable (稳定的) life．”

can’t take her children away from her

[单选题]枣(zizphus jujuba)是我国特产，山西是主产省份之一。( )

正确

[单选题]下列植物中无性生殖产生游动孢子的有( )。

水霉

[单选题]The underlined words “tipping points” most probably refer to

melting points

[单选题]小麦幼苗的第一片真叶是( )。

由顶端分生组织产生