Besides playing computer games, is there anything meaningful that kids want to do during the long holiday? Doing experiments (實(shí)驗(yàn)) can be interesting, and you may try the following experiments at home. Make sure that you’ll do them with an adult.

Experiment A: Make your own cloud

① Fill a bottle with hot water. Leave it for five minutes.

② Pour 3/4 of the water away.

③ Put some ice on the top of the bottle.

④ Wait and watch! In a few minutes, there is a cloud.

Experiment B: A magic balloon

① Put the balloon on a bottle.

② Put the bottle in the hot water, the air gets hot and rises into the balloon.

1.According to the passage, we should do the two experiments ________.

A. in the field B. all by ourselves

C. with an adult D. only in summer

2.According to Experiment A, which one is the right order?

a. b. c. d.

A. a-c-d-b B. d-a-c-b C. d-c-a-b D. a-b-d-c

3.In Experiment B, the balloon will _________.

A. stay the same B. be smaller

C. be bigger D. fall into the bottle

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