C4植物光合作用过程中的重要特点是（）_刷题宝

题干

C₄植物光合作用过程中的重要特点是（）

A：既有C₄途径又有C₃途径

B：只有C₄途径没有C₃途径

C：先进行C₃途径后进行C₄途径

D：只有C₃途径没有C₄途径

上一题下一题 0.0难度选择题更新时间:2019-11-03 09:02:20

答案(点此获取答案解析）

A

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图为人耳的结构模式图，请根据图示和你所了解的相关知识，完成下列问题：

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在一次数学考试中，某班级的一道单选题的答题情况如下：

根据以上信息，该班级选择“B”选项的有____．

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已知x与y之间的一组数据：

x	0	1	2	3
y	m	3	5.5	7

已求得关于y与x的线性回归方程为 $\hat{y}$ =2.1x+0.85，则m的值为（）

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看图，读一读，选择句子补全对话。
A. I'm thirsty.
B. Thank you, Mum.
C. Good afternoon, Lily.
D. Do you like it?
E. How does it taste?

Lily: Good afternoon, Mum. I'm home.

Mum: ____ How are you today?

Lily:____ It's very hot today.

Mum: Have a pear, Lily.

Lily: ____

Mum: Taste it. ____

Lily: It's sweet and juicy.

Mum: ____

Lily: Yes, I do.

同类题5

补全对话。

A：Hi, Tom. ____

B：Yes, very much. Last week, I went to Mount Tai with some friends.

A：Really? ____

B：It was great．We had a good time there．

A：____

B：Yes, it is．It's one of the most popular places there.

A：____

B：It's about 1,500 metres high. It took us five hours to get to the top．

A：I see. ____

B：Of course. We got up earlier. It was a wonderful experience for me．

A．Did you see the sunrise there?

B．How did you like it?

C．Where did you get to the top?

D．How high is it?

E．Do you like mountain climbing?

F．What's the highest mountain in the world?

G．Mount Tai is in Shandong Province, isn't it?

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