试题与答案

聚山梨酯可作为( )。 A.絮凝剂和反絮凝剂 B.天然高分子助悬剂 C.合成高分子

题型:单项选择题

题目:

聚山梨酯可作为( )。

A.絮凝剂和反絮凝剂
B.天然高分子助悬剂
C.合成高分子助悬剂
D.润湿剂
E.低分子助悬剂

答案:

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Autumn blues? Let the sunshine in falling leaves, flowers, and cold winds. For many people late autumn can be a season of depression.

Those who suffer from “ the autumn blue” are often extremely tired, lack energy, need more sleep, feel increased appetite and gain weight. "The exact cause of this condition, often called seasonal depression or seasonal affective disorder (SAD), is not known yet," says Chen Jue, associate professor at Shanghai Mental Health Center. "But recent studies indicate that weather change is influential and strongly suggest that this condition is caused by changes in the availability(得到) of sunlight."

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B.sunshine

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B.is a real example

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A.The real cause for autumn blues is still unknown.

B.Autumn blues can be feelings of happiness.

C.People feel tired in autumn.

D.Weather doesn’t change people.小题4:Which of the following CAN’T you do in order to deal with autumn blues?

A.Reset the biological clock regulating mood, sleep and hormones.

B.Eat more food very low in calories and sugar.

C.Keep the balance of nerves that transmit information.

D.Take outdoor activities or sports.

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