Question

帮忙解决下这道英语题。

Answer 1

1. Remember do your homework everyday on time.

2. We should always speak English in class.

3. Why don't you listen the radio?

4. Let's speak English as much as possible

5. Why don't we write down the mistakes on notebook?

6. Speal and read new words loudly is a good idea.

7. How about listen to English songs?

8. Don't forget write the correct answers beside the wrong ones.
   

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回答都没错吧！

追答

。。。。。。。。哥英语专业混过的，这初中一年级的题。。。

Answer 2

(a)The equation for single slit diffraction is a sinθ=mλ here a is the slit width, λ is the wavelength since the first dark band at 30 degree, that is m=1, θ=30degree therefore a=λ/sinθ=2x10^-7/sin(30)=4x10^-7 (b) The photon en....

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怎么回答的

不会就不要乱答，蠢货。