1、【题目】Comets are still regarded with awe by some people.

选项：

A.wonder

B.concern

C.resentment

D.detachment

答案：

A

解析：

暂无解析

1、【题目】How many people are aware that a dancer with the New York City Ballet typically wears out a minimum of two hundred pairs of toe shoes per year?

选项：

A.only

B.exactly

C.atleast

D.fewerthan

答案：

C

解析：

暂无解析

1、【题目】The Salk vaccine is a major factor in the fight to eradicate polio.

选项：

A.completelydestroy

B.carefullydisguise

C.sustain

D.contain

答案：

A

解析：

暂无解析

1、【题目】The Native American interpreter Sacajawea was a valuable member of the Lewis and dark expedition in 1805.

选项：

A.veryfriendly

B.veryuseful

C.verythoughtful.

D.verywealthy

答案：

B

解析：

暂无解析

1、【题目】DoubleEagleinthefirsttransatlanticballoon,wasgreetedbyavidcrowdsinFrance.

选项：

A.eager

B.surging

C.appreciative

D.vigorous

答案：

解析：

1、【题目】When carbon is added to iron in the proper proportions , the result is steel.

选项：

A.container

B.sequence

C.laboratories

D.amounts

答案：

D

解析：

暂无解析