Question

【题目】Blowing bubbles is fun! The best thing about bubbles is that it's easy to make your own bubble solution(溶液). You can make as much as you want and blow as many bubbles as you'd like. Do you know the secret of making bigger and stronger bubbles? Do just as follows:

Measure 6 cups of water into one container, then pour 1 cup of dish soap into the water and slowly stir (搅拌) it until the soap is mixed in. Try not to let bubbles form while you stir.

Measure 1/4 cup of corn syrup and add it to the container. Stir the solution until it is mixed together.

You can use the solution right away, but to make even better bubbles, put the cap on the container and let your super bubble solution sit overnight. The soap mixture on the outside of a bubble is actually made of three very thin layers: soap, water, and another layer of soap. A bubble forms when the water between the layers of soap turns into gas. The corn syrup mixes with the soap to make it thicker. The thicker skin of the bubbles keeps the water from evaporating(蒸发) quickly, so they last longer. It also makes them stronger, so you can blow bigger bubbles.

Dip a bubble wand or straw into the mixture, slowly pull it out, wait a few seconds, and then blow. If you don't have a ready made "bubble wand", you can make your own bubble wand by cutting off the end of the bulb of a plastic pipet (移液管). Dip the cut end in the solution and blow through the narrow end. You can also make a circle out of thin wire or pipe cleaner. Just twist a round end on your wire to blow the bubbles through. You can even make it heart shaped, square or use other shapes if you're clever enough to bend it well.

【1】The text is written to _________ .

A. argue B. advertise C. entertain D. instruct

【2】The secret of making bigger and stronger bubbles lies in_________ .

A. soap B. corn syrup C. water D. straw

【3】The bubble wand is used to_________ .

A. blow bubbles B. mix the solution C. measure soap D. shape wires

【4】What can we infer from Paragraph 4?

A. More soap, more bubbles.

B. Less water, better bubbles.

C. Thicker layers, more bubbles.

D. Stronger skin, bigger bubbles.

Answer 1

【答案】

【1】D

【2】B

【3】A

【4】D

【解析】这是一篇科普说明类文章。文章介绍了如何自制泡泡。

【1】推理判断题。根据第一段中的“Do you know the secret of making bigger and stronger bubbles? Do just as follows:”可知，该文向我们介绍了如何自制泡泡的过程，因此写作目的是“教导，指导”，故D选项正确。

【2】细节理解题。根据第四段中的“The corn syrup mixes with the soap to make it thicker. The thicker skin of the bubbles keeps the water from evaporating(蒸发) quickly, so they last longer. It also makes them stronger, so you can blow bigger bubbles.”可知，玉米糖浆和肥皂混合，使得泡泡变得更厚，更结实。故B选线正确。

【3】细节理解题。根据第五段中的“Dip a bubble wand or straw into the mixture, slowly pull it out, wait a few seconds, and then blow.”可知，将a bubble wand在混合液里蘸一蘸，慢慢把它拉出来，然后吹。很明显，a bubble wand是用来吹泡泡的。故A选项正确。

【4】推理判断题。根据第四段中的“The thicker skin of the bubbles keeps the water from evaporating(蒸发) quickly, so they last longer. It also makes them stronger, so you can blow bigger bubbles.”可知，泡泡的皮越厚，就会使水的蒸发变慢，泡泡持续的时间变长，而且泡泡更结实，因此你可以吹出更大的泡泡。故D选项正确。