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6. Some children were throwing (石頭) into the river when I walked past.

6. stones

題目來源：2016年初中復習與能力訓練英語江蘇人民版 > 9A Unit 5

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完形填空先通讀下面的短文，掌握其大意，然后在每小題所給的四個選項中，選出可以填入空白處的最佳選項。

In some Asian cultures, snow-white skin is considered a sign of beauty,and many women try whitening creams that can also 1 bad results.

Some of them cause skin problems,others can cause serious illness over time. And still others have mercury (水4艮) ， 2 is quite bad for body.

Now,Taiwanese researchers say that an ancient Chinese herb (香草) 3 in traditional medicine might reduce the production of melanin (黑色素) .

The scientists are 4 their findings on Tuesday at the year of meeting of the American Chemical Society.

The Chinese herb,which comes from a kind of bush,is 5 than whitening creams,the researchers say. It has two chemicals in it that are able to inhibit melanin.

6 melanin causes coloring of the skin,hair and eyes,inhibiting melanin is one way to whiten skin,said the lead author,Hui-Min Wang,a scientist at Kaohsiung Medical University in Taiwan.

Dr Wang and his partners 7 the chemicals on zebra fish embryos (胚胎). The test showed that the 8 made melanin production less in the fish by about 50% in four days,and the embryos turned white,not like zebra anymore.

However,just because the chemicals are 9 and man-planted doesn’t mean that they are safe enough for human use.

Although they are not bad for 10 when taking little,researchers will do more research.

() 1. A. carry B. fetch C. bring D. take

() 2. A. which B. what C. when D. where

() 3. A. use B. used C. using D. uses

() 4. A. repairing B. reviewing C. replying D. reporting

() 5. A. cheaper B. safer C. more important D. more useful

() 6. A. Since B. If C. For D. Although

() 7. A. examined B. checked C. matched D. tested

() 8. A. lightening creams B. herbs

C. chemicals D. bushes

() 9. A. natural B. traditional C. medical D. central