过敏性紫癜的主要症状，下列哪项是错误的A．皮肤紫癜B．血尿和蛋白尿C．舞蹈病D．腹痛、便血E．关节肿痛

听力原文：F: Must we work out the problems？M: No, you needn't. Tomorrow will do.

When must they work out the problems？

A．Tomorrow.

B．Now.

C．Next week.

A、when crossed

B、when crossing

C、if you crossed

D、while you were crossing

When crossing the street, we can not be ______ careful.

A．very

B．quite

C．too

D．such

--I always look out when crossing the street.--You are right. You can't be too ______.

A．nervous

B．careful

C．careless

D．hurried

We must think of the ______ of the disabled when we organize an activity？

A．worries

B．needs

C．dreams

D．number

We've worked out the plan and now we must put it into______.

A．fact

B．reality

C．practice

D．deed

A、at

B、for

C、on

When we write, we must write as ________ as we can.

A、careful

B、carefully

C、more careful

D、more carefully

一When can we discuss the problem？

一()when we can,we must prepare foritright now．

A．No matter

B．Even though

C．As soon as

D．So that