问题 选择题

下列关于科学观察的说法,不正确的

A.科学观察是科学探究的一种基本方法

B.科学观察必须借助有关工具才能进行

C.观察是要全面、细致和实事求是,并及时记录下来

D.观察时要积极思考,多问几个为什么

答案

答案:B

题目分析:科学观察不只是感性活动,而且是由科学理论知识和科学思维方法武装起来的认识活动,理性思维渗透于观察过程的始终,正因为如此,科学观察才能达到客观性、全面性和系统性,才可能透过现象发现本质,科学发现往往源于用心的观察与研究,只有具备了准确的头脑,科学发现才有可能降临,单凭我们的感官进行观察还不能对事物做出可靠的判断,因此经常要借助于一些仪器和工具来帮助我们做出准确的判断,但是不一定必须借助有关工具才能进行,故B符合题意。

选择题
阅读理解

Do your kids like plastic toys? Well, I guess it’s time for them to play with wooden toys.

I have always liked kids’ wooden toys since I was five. I always ran along on the back of a hobby horse pretending to be a cowboy from the West when I was a little boy. Now I’m a dad and I still like buying these timeless natural wooden toys. They will never be out of style. My daughter has a child’s rocking horse, and my two sons have wooden trains and cars. The great thing about this type of toys is that they will last generations if they are treated kindly. Even if they break, most of the time they can be repaired using spare parts bought from wooden-toy makers, and if the part is not too complicated(复杂的), you yourself can make the part from a piece of wood.

What if they do break and can’t be repaired? Well, at least they can be dealt with without having any bad effects on the environment. They can be turned into wood chippings and used for pathways in the country or play areas for kids. Even if the wooden toy is buried as rubbish, which is very rare these days, it will not harm the soil or the environment.

I like all types of wooden toys. There is such a wide variety of wooden toys today and the choice is getting bigger day by day. As an alternative(替代品) to plastic toys, wooden toys can’t be beaten. I’m sure in the near future wood will no doubt become the number one material for making toys, as plastic becomes more and more expensive because of rising oil prices and the environmental issues concerning plastic. Plastic toys might harm kids’ health, too.

67. According to the author, wooden toys which can’t be repaired will _______.

A. be taken back by the makers            B. need a lot of money to deal with

C. not harm the environment              D. be collected by collectors

68. From the last paragraph, we can learn that _______.

A. plastic will be used up sooner or later

B. plastic toys will not be allowed to be sold very soon

C. wooden toys will become more popular in the future

D. wooden toys will become more and more expensive

69. Which of the following is NOT the reason why plastic toys will be less popular in the future?

A. That plastic has bad effects on the environment.

B. That plastic toys might harm the health of children.

C. That plastic toys offer children few choices.

D. That oil prices are getting higher than before.

70. We can infer that this passage is written to _______.

A. tell us the disadvantages of plastic toys   

B. advise parents to buy wooden toys instead of plastic ones

C. tell us how much the author and his children like wooden toys

D. advise toy makers to make wooden toys rather than plastic ones