have an internal clock that controls the beating of our heart, and the of our breathing.A．Human being; steps B．Humans; paceC．Human beings; steps D．Man; pace 题目和参考答案——青夏教育精英家教网—

题目内容

________ have an internal clock that controls the beating of our heart, and the ________ of our breathing.

A．Human being; steps B．Humans; pace

C．Human beings; steps D．Man; pace

【解析】B 考察名词。句义：人类体内有一个生物钟，它控制我们的心跳和呼吸的节奏。因为谓语是have，所以排除AD，humans=human beings，但steo的含义是脚步，步伐；

练习册系列答案

相关题目

Worried about the time ________， Mary had made a list of the sites she wanted to see in Beijing.

A．adequate B．available

C．avoidable D．accessible

I bought the train tickets at the station easily during the spring rush, though ________ of them ________ it.

A．nobody; expected B．none; had expected

C．nobody; had expected D．none; expected

—Have you figured out how much the tuition is in American universities?

—$19 000 or ________ like that.

A．anything B．everything

C．nothing D．something

The ________ on driving after drinking alcohol is being carried out all over the country, which is helpful to reduce traffic accidents.

A．withdrawal B．prejudice

C．aim D．ban

It is announced that________$20,000 reward will be offered for ________ return of the stolen sculpture.

A.a; the B./; the

C.a; a D./; a

In ________ early 1990's, as ________ gesture of appreciation, the library was named after the businessman who donated most of the money with which to build it.

A.the; a B.the; the

C./; the D．an; /

As is known to all, ________ opening ceremony of the 16th Asian Games held on November 12th in Guangzhou was ________ great success.

A．不填；a B．the; a

C．the; 不填 D．a; 不填

Currently, many American women are still faced with the ________ of choosing between work and family commitments.

A．desperation B．confusion

C．dilemma D．concern

试题分类