双人进行心肺复苏时应（）。 A.每15秒使肺扩张1次 B.每15秒使肺扩张2次 C.

—Is this your eraser?    

—_______.     [ ]

A. No, it isn't. It's my eraser    

B. Yes, it is.It's his eraser    

C. No, it is.It's his eraser      

D. Yes, it is.It's my eraser

Many people expect that credit cards will eventually______ paper money for almost every purchase.

A. trade                  B. replace              exchange         D. reduce

小题1:What’s the purpose of the advertisement?

A．To introduce some wild animals to visitors.

B．To invite visitors to walk in the wildlife park.

C．To attract visitors to get close to the sea animals.

D．To provide seafood for visitors to feed the sea animals.小题2:If a parent who is the member of the Aquarium is going to have the Trainer Tour with her child of ten, how much does she have to pay?

A．$ 175

B．$ 140

C．$ 35

D．$ 31小题3: Which of the following is true according to the advertisement?

A．The programs are changeable.

B．There is no danger to a small child.

C．You can phone 604—659—FISH to book the programs.

D．Bigger groups of visitors are encouraged to save money.

该病最可能的诊断是

A．牙周炎

B．缘龈炎

C．青春期龈炎

D．单纯性肥大性龈炎

E．牙龈纤维增生

智力是( )的综合。

A．观察能力
B．思维能力
C．一般能力
D．特殊能力