下图为休眠的枫树种子经低温处理后一段时间内各种激素含量的变化_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

下图为休眠的枫树种子经低温处理后一段时间内各种激素含量的变化情况，下列说法错误的是

[ ]

A．山区的人将种子置于清晨流动的溪水中，可打破种子的休眠，使种子提前萌发

B．脱落酸与细胞分裂素、赤霉素均表现为拮抗作用，细胞分裂素和赤霉素表现为协同作用

C．导致种子休眠和萌发过程中各种激素变化的根本原因是在不同时期细胞中基因的种类和数量不同

D．植物的生命活动受多种植物激素调节

答案

答案：C

选择题

—The earth goes round the sun.
—What did he say? I couldn't hear him.
—_________.

A. He says the earth goes round the sun.
B. He said the earth goes round the sun.
C. He said the earth went round the sun.
D. He says the earth went round the sun.

选择题

_______ good for our health.

A．Do exercise is

B．Doing exercise is

C．Do exercises are

D．Doing exercises are