题干

17世纪,植物学家格鲁通过解剖花,描述花的结构:“在花中有产生精子的部分,其中有相当于动物精子的小球,能使相当于卵巢的部分发育受孕。下列分析中错误的是(  )

A:格鲁所述“花中产生精子的部分”其实就是指雄蕊(或花药)

B:格鲁所述“花中相当于卵巢的部分”其实就是指雌蕊

C:格鲁所述“相当于动物精子的小球”是指花粉粒

D:格鲁所观察的植物很可能是蕨类植物

上一题 下一题 0.0难度 选择题 更新时间:2020-03-06 11:11:42

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D

同类题5

根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    Many parents would like to teach their children English at home, but don't know how to start. It doesn't matter if your own English is not perfect. The most important thing is that you give your children lots of encouragement and praise.____ They will need some time to learn the language.

Make it a rule

    Try to do certain activities at the same time every day.____ For example, you could read an English story with your children before bedtime. Repetition (重复) is important — children often need to hear words many times before they say them themselves.

Playing games

    ____ Cards are a great way to teach words and there are many different games which you can play with cards, such as Memory and Happy Families.

Using everyday situations

    The advantage of teaching English at home is that you can use everyday situations to practice the language naturally. For example:

    Talk about clothes when your child is getting dressed ("Let's put on your blue socks", etc.).

    ____When you go to the supermarket, give your child a list of things to find.

    Using songs

    Songs are a really good way to learn new words. Songs with actions are especially good for very young children because they are able to join in.____

A. Fifteen minutes is enough for very young children.

B. Children learn naturally when they are having fun.

C. Teach food words when you are cooking or going shopping.

D. The actions often show the meaning of the words in the song.

E. With younger children, there is no need to teach grammar rules.

F. Don't worry if your child doesn't start speaking English immediately.

G. Children feel more comfortable and confident when they know what to expect.