试题来源: 解析 The leaves turn yellow, orange, and red and then fall off the trees. 在秋季,气温下降,日照时间减少,导致树叶中的叶绿素分解。原本存在的类胡萝卜素显现出来,使树叶呈现黄色、橙色和红色。同时,树叶中积累的糖分也促进了颜色变化。最终,树叶中的营养物质被树干和根部吸收,树叶枯萎并脱落。
8. What do farmers do in autumn? 相关知识点: 试题来源: 解析 7. The leaves change color and fall off the trees. 8. Farmers harvest their crops and prepare the land and seeds for the next planting season. 7. 秋天,树叶会变色并从树枝上掉落。 这是因为气温下降,日照时间减少,树叶中的叶绿...
Leaves f___in autumn (秋天). Ⅲ. 单项选择。 ( ) 1. What___to your nose? A. is B. does C. wanted D. happened 相关知识点: 试题来源: 解析 <> 答案: ( ) 2. I like to take a___with my camera. A. book B. trip C. picture D. rest ( ) 3. I had___in Beijing. A...
阅读材料:Autumn is the season of harvest. The leaves turn yellow. 问题:What happens to the leaves in autumn? A. They turn green. B. They turn red. C. They turn yellow. D. They stay the same. 相关知识点: 试题来源: 解析 C。解析:文中说“Autumn is the season of harvest. The ...
1( ) What colour ___ the leaves in autumn?A. is B. are 2( ) What colour ___ the leaves in autumn?A.isB.are 3What colour ___ the leaves in autumn?( )A.isB. are 4—What colour are the leaves in autumn?—___ 5 【题目】 ( ) What colour ___ the leaves in autumn...
Summer is a hot season of a year. The sun is always bright,sometimes it is cloudy with heavy clouds and there are storms. If there is too much rain. There will be floods. We pick apples in autumn. The leaves turn yel...
相关知识点: 试题来源: 解析 B。根据 Autumn is a season of harvest.The leaves turn yellow and fall from the trees 可知秋天树叶变黄落下。B 反馈 收藏
( D )8. -What will happen when autumn comes?-Tree leaves will and the temperature will A. turn green; drop slowly B. turn brown; rise quickly C. turn green; rise quickly D. turn brown; drop slowly 相关知识点: 试题来源: 解析 答案见上8.D 【点拨】答句句意:树叶将变成棕色,气...
What happens to the leaves of the maple tree in autumn? A. They turn red. B. They turn yellow. C. They fall off. D. They stay green. 相关知识点: 试题来源: 解析 A。解析:枫叶在秋天变红。本题考查对枫叶在秋天变化的了解以及复合句中时间状语 in autumn 的用法。反馈 收藏 ...
1. Autumn is here, and the _/graund/ is full of leaves.2. --- What happened to you? --- I ___(跌落) down from the ladder just now.3. In the past, my grandmother often raised ___/'raebits/ at home.4. They ___(跟随) the girl behind, but the girl didn't know them....