Edison had built a chemical lab of ___ when he was very young.
| A．himself | B．him | C．itself | D．his own |
166. As we all know, _____ is very famous for its software industry though it is a developing country.
| A．Japan | B．South Korea | C．India | D．Ireland |
165. In America, the teen-age crime is on the _______. This is what the American public worry most.
| A．addition | B．increase | C．increasing | D．Independence |
164. Some people here don't work hard but they get a good _______ from their investments.
| A．wage | B．earnings | C．income | D．Salary |
163. James was weak from a long _____ . I think he should have good rest and enough nutrition(营养).
| A．disease | B．sickness | C．illness | D．Unhappiness |
162. At the social gathering the weather is the subject which usually breaks the _____.
| A．ice | B．iceberg | C．topic | D．Instance |