题干

正常情况下,人的血糖含量维持在90 mg/dL左右。下列叙述正确的是(   )

A:运动初期血糖浓度下降,是由于血糖进入细胞,通过呼吸产生乳酸、ATP造成的

B:在1.8~4.5 min内,血糖浓度上升,这种变化满足了运动时机体对能量的需求

C:在4.5~5 min内,引起血糖变化是胰岛素和胰高血糖素协同作用的结果

D:9 min后血糖逐渐恢复到运动前水平,这是神经调节的结果

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答案(点此获取答案解析)

B

同类题3

短文填空。用下面方框中单词的适当形式填入短文空格内,使短文 意思正确、通顺。

back bad        express         feel     it     loud  luck     simple     sweet      thank      two    warm

Once upon a time, a young man came across a spring(泉水) of clear water while crossing the desert. The water was very sweet, and he filled his leather container(皮革容器) so that he could bring some____ to his teacher. After a four-day journey, he presented the water to his teacher.

The old man took a deep drink, smiled____ and thanked his

student very much for the sweet water. The young man returned to his village with a happy heart. After a while, the teacher let a____ student taste the water. He spat (吐) it out, saying it was terrible. It was clear that the water had become no longer fresh sweet because of the old leather container. The student questioned his teacher, “Master, the water tasted strange. Why did you still like it?” The teacher replied, “You____ tasted the water while I tasted the gift. The water was the container for an act of love and kindness and nothing could be ____ .”

After reading the story, we can understand that when we receive a chocolate as a gift from a child, we get more than the chocolate

____ . What we should do properly is to express ____ naturally to him or her because we love the idea within the gift.

Gratitude (感谢) doesn’t always come  naturally.____ , most children and many grown-ups like only the thing given rather than the ____ shown in it. We should remind ourselves and teach our children about the beauty of feelings and____ of gratitude. After all, gifts from the heart are really gifts of the heart.