1.In fact, the rays could pass as easily through the fleshy part of his hand as through the black paper, but hardly at all through the bone.

2.The answer would seem to lie in nuclear power stations.

3.If the world population goes on increasing at its present rate, we may, in fifty years' time, be burning up so much energy that we would damage the earth's atmosphere.

4.Psychologists deal with the minds and behavior of people.

5.Several people have been instrumental in the field of psychology.

答案：

1.事實(shí)上，就像穿過(guò)一張黑紙一樣，射線很容易穿過(guò)手部的肌肉，但卻根本不能穿過(guò)骨骼。

2.看來(lái)問(wèn)題在于核電站。

3.如果世界人口繼續(xù)以當(dāng)前這種速度增長(zhǎng)的話，也許，五十年后，這樣燃燒如此多的能源將會(huì)致使我們破壞地球的大氣層。

4.心理學(xué)家研究人們的心理與行為。

5.一些人在心理學(xué)領(lǐng)域起了很大作用。