What is the situation of your brain during the sleep before an exam？

A．It is deeply relaxed.

B．It feels nervous.

C．It is restless and tired.

D．It keeps working.

思维的发展是儿童创造发展的必要前提，思维能力本身就是创造力的主要成分之一。思维能力的发展是自然的过程，不需要训练。()

世界上制定第一部成文宪法的国家是()。

A、英国

B、法国

C、德国

D、美国

“寒极生热，热极生寒”，体现了阴阳的哪一关系()

A.相互交感

B.对立制约

C.消长平衡

D.相互转化

E.消长平衡

______for the timely investment from the general public, his company would not be so thriving.

A．It had not been

B．It had been not

C．Had it not been

D．Had not it been

治疗哮喘最有效的抗炎药是

A.茶碱类

B.肾上腺受体激动药

C.抗胆碱药物

D.糖皮质激素

E.白三烯拮抗剂