某些植物在叶细胞中大量储存五碳糖、黏液等物质来降低冰点,增强抗寒能力。( )

题型:判断题

问题:

某些植物在叶细胞中大量储存五碳糖、黏液等物质来降低冰点,增强抗寒能力。( )

考点:专升本考试生态学基础专升本生态学基础
题型:判断题

受精卵是在哪个部位形成的(  )

A. * *

B.子宫

C.卵巢

D.输卵管

题型:判断题

初孕妇初感胎动时间一般在

A.12~14周
B.20~22周
C.14~16周
D.18~20周
E.16~18周

题型:判断题

最早将实验和逻辑推理(包括数学演算)和谐地结合起来,从而发展了人类的科学思维方式和科学研究方法的科学家是(  )

A.笛卡尔

B.牛顿

C.伽利略

D.亚里士多德

题型:判断题

当选用的工业齿轮油粘度过高,会使()。

A、油温升高

B、油温降低

C、油温不变

D、油温微变

题型:判断题

Shopping habits in the United States have changed greatly in the last quarter of the 20th century. (1) in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was (2) on both sides with many (3) businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. (4),some shops offered (5) .These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. (6) in the 1950s, a change began to (7) .Too many automobiles had crowded into Main Street (8) too few parking places were (9) shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces (10) the city limits. Open space is what their car-driving customers needed. And open space is what they got (11) the first shopping centre was built. Shopping centres, or rather malls, (12) as a collection of small new stores (13) crowded city centres. 14 by hundreds of free parking space, customers were drawn away from (14) areas to outlying malls. And the growing (16) of shopping centres led (17) to the building of bigger and betterstocked stores. (18) the late 1970s,many shopping malls had almost developed into small cities themselves. In addition to providing the (19) of one stop shopping, malls were transformed into landscaped parks, (20)benches, fountains, and outdoor entertainment.

请在14处填上正确答案()

A.Attracted

B.Surprised

C.Delighted

D.Enjoyed

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