花程式 中, G (2:2:1 ) 表示什么

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【单选题】

A.

雌蕊群，子房下位，合生心皮2，子房室数2，每室1胚珠

B.

雌蕊群，子房上位，合生心皮2，子房室数2，每室1胚珠

C.

雌蕊群，子房下位，合生心皮2，胚珠2，子房室数1

D.

雌蕊群，子房上位，离生心皮2，子房室数2，每室1胚珠

参考答案：

B

复制

纠错

举一反三

A.

She taught fewer school subjects.

B.

She became stricter with her students.

C.

She no longer liked her job as a teacher.

D.

She cared more about educating students.

A.

Semi State rooms are open to visitors all year round.

B.

Queen Mary’s Dolls’ House is a miniature mansion.

C.

The man ever visited the Windsor Castle.

相关题目：

In what way did Mrs. Thompson change?

A.

She taught fewer school subjects.

B.

She became stricter with her students.

C.

She no longer liked her job as a teacher.

D.

She cared more about educating students.

What can we learn from the talk?

A.

Semi State rooms are open to visitors all year round.

B.

Queen Mary’s Dolls’ House is a miniature mansion.

C.

The man ever visited the Windsor Castle.

参考解析：

雌蕊群，子房上位，合生心皮2，子房室数2，每室1胚珠

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