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Many animals recognize their food because they see it. So do . When you see an apple or a piece of chocolate you know that these are things you can eat. You can also use other when you choose your food. You may it because it smells good or because it good. You may dislike some types of food because they do not look, smell or taste very nice. Different use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense. Although there are many types of food, some animals spend their lives eating only one type. The giant panda eats only one type of bamboo. Other animals eat only one type of food even when given the . A kind of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other in the garden. However, most animals have a more diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The of these animals will be different depending on the season. have a very varied diet. We often eat food because we like it and not because it is for us. In countries such as France and Britain, people eat foods with too much . This makes them overweight, which is bad for their health. Eating too much red meat and animal , such as butter, can also be bad for the health. Choosing the right food, therefore, has become an area of study in modem life. 小题1: A.males B.children C.humans D.adults 小题2: A.organs B.senses C.parts D.means 小题3: A.hate B.sell C.like D.fancy 小题4: A.digests B.consumes C.touches D.tastes 小题5: A.creatures B.mammals C.people D.animals 小题6: A.different B.rare C.familiar D.unique 小题7: A.typical B.particular C.special D.unusual 小题8: A.food B.meal C.choice D.diet 小题9: A.flowers B.vegetables C.fruits D.branches 小题10: A.varied B.creative C.random D.nutritious 小题11: A.fish B.fruit C.diet D.insect 小题12: A.Animals B.Chinese C.Humans D.Foreigners 小题13: A.effective B.beneficial C.delicious D.attractive 小题14: A.sugar B.nicotine C.fiber D.alcohol 小题15: A.products B.attachments C.goods D.subscriptions
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【多选题】对叶轴和小枝如不加以辨认,易混淆复叶和单叶。叶轴和小枝的差异主要包括( )
A.
叶轴的顶端没有顶芽,而小枝常具顶芽
B.
叶轴上小叶的叶腋一般没有腋芽,而小枝的叶腋都有腋芽
C.
复叶脱落时,先是小叶脱落,最后叶轴脱落
D.
小枝上只有叶脱落
【多选题】下列行为不属于不正当竞争行为的是()。
A.
销售鲜活商品
B.
处理有效期即将到期的商品或其他积压商品
C.
季节性降价
D.
因清偿债务,转产,歇业降价销售的商品
【多选题】对叶轴和小枝如不加以辨认,易混淆复叶和单叶。叶轴和小枝的差异主要包括( )
A.
叶轴的顶端没有顶芽,而小枝常具顶芽
B.
叶轴上小叶的叶腋一般没有腋芽,而小枝的叶腋都有腋芽
C.
复叶脱落时,先是小叶脱落,最后叶轴脱落
D.
小枝上只有叶脱落
【多选题】具单叶的小枝与羽状复叶之间容易混淆,识别时先要弄清叶轴与小枝的区别:下面的说法正确的是( )
A.
叶轴上有芽,小枝上没有芽
B.
复叶小叶与叶轴成一平面,而小枝上单叶与小枝常成一定角度
C.
复叶常由总叶柄处脱落,小枝不落仅落叶
D.
叶轴上无芽,小枝上有芽
【判断题】大接地电流系统中的空充线路发生A相接地短路时,B相和C相的零序电流为零。
A.
正确
B.
错误
【简答题】由( )组成的几何图形,叫控制网。
【简答题】大接地电流系统系统发生接地短路时,零序电气量有何特点?
【简答题】什么叫大接地电流系统?该系统发生接地短路时,零序电流分布取决于什么?
【单选题】中国知网的高级搜索功能可以设置()
A.
主题
B.
文献时间
C.
文献作者
D.
以上都可以
【判断题】复叶上没有芽,小枝上有芽。
A.
正确
B.
错误
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