According to the rules of the factory， you mustn′t ask for leave ( )you have adoctor′s note.

A.looking out

B.taking out

C.finding out

D.figuring out

A.had been

B.might be

C.might have been

D.would be

A.take

B.hold

C.make

D.get

A.A head of

B.At the sight

C.At the risk of

D.By way of

A.and

B.but

C.or

D.as

 A. meet the standard of

B. realize the purpose of

C. fulfil the demands of

D. keep the promise of

A. a shop assistant

B. the store manager

C. the manufacturer

D. a public organization

A. people find invisible diseases difficult to deal with

B. attacks by hidden enemies tend to be fatal

C. diseases with obvious signs are easy to cure

D. people tend to overlook hidden dangers caused by pesticides

A. limited exposure to them does little harm to people's health

B. the present is more important for them than the future

C. the danger does not become apparent immediately

D. humans are capable of withstanding small amounts of poisoning

A. is not the worst of the negative consequences resulting from the use of pesticides

B. now occurs most frequently among all accidental deaths

C. has sharply increased so as to become the center of public attention

D. is unavoidable because people can't do without pesticides in farming