【题目】1 2 3

【1】Sign I means __________.

A.people must wear protective glasses in this areaB.people mustn't wear protective glasses in this area

C.it's dangerous to wear a pair of glasses in this areaD.this pair of glasses is dangerous for people's eyes

【2】Sign 2 is mainly for __________.

A.studentsB.teachersC.policemenD.drivers

【3】Sign 3 is probably put up __________.

A.on the gate of a parkB.on the gate of a school

C.on the wall of a reading roomD.on the wall of a post office

【题目】

【1】Which of the following needn’t be included in this experiment(实验)?

A.String.B.Water.C.Glass.D.Pipe.

【2】According to the instruction, which of the following order is correct?

① run the string from the pitcher to the glass

② soak the string in water for a few minutes

③ hold the pitcher slightly higher

④ tilt the pitcher until water pours out

⑤ fill the pitcher with water

⑥ tie the string to the handle of the pitcher

A.②⑥③⑤④①B.②⑥⑤③①④C.①⑥⑤③②④D.①⑥③⑤②④

【3】When water runs along the string, _________.

A.there is surface tension to make sure water can roll down

B.the string can be winding(弯曲的) or loose

C.the tiny water can’t form a sort of skin

D.the pitcher and the glass must be put at the same height

A. happily; happy B. happy; happy

C. happy; happily D. happily; happily

-- At 10:00 pm.

A. when she returned B. where she went

C. why she left D. how she came.

— ________.

A. Good luck B. It doesn’t matter

C. You’re welcome D. Of course

A. after all B. first of all

C. on the whole D. above all

— That’s for sure. I like her classes very much.

A. natural B. important C. enjoyable D. Useful

A. to join; speaking B. join; speaking

C. join; to speak D. to join; to speak

A. to B. at C. for

A. to win B. winning

C. not to win D. not winning