Thesplitbetweenhumansandliving

The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.

A．to occur

B．occurring

C．to have occurred

D．having occurred

登录免费查看答案和解析

相关试题

China came up to the sixth place in the world _____ economic aggregate(经济总量)。

A．instead of

B．in favor of

C．in exchange for

D．in terms of

收藏答案/解析

It’s unfair! You sit there, listening to me, _____ I stand here, teaching you.

A．as

B．when

C．while

D．since

收藏答案/解析

Only _____ our courage beats our fear ________________.

A．when; can we succeed	B．if; we can succeed
C．because; will we succeed	D．while; we’ll be able to succeed

收藏答案/解析

Three fourths of the surface of the earth ______ covered with water.

A．are

B．is

C．will be

D．was

收藏答案/解析

We finally bought a house, _________ about seven feet by ten.

A．measured

B．measuring

C．is measured

D．measures

收藏答案/解析