填空题Not until Alice had a baby of her own ______ (她才了解) bow hard it was for her mother to have brought up her sister and her on her own.

填空题For a while, Roosevelt trained ______ a weak with two Japanese wrestlers.

填空题When he was young, Peter Schwartz was very interested in the movement of social change.

填空题Amber was more valuable in Victorian times than in the times of Peter the Great.

填空题For a Frenchman, a German or an Englishman friendship is usually more particularized and carries heavier

填空题The welfare of the individual is bound up ______ the welfare of the community.

填空题S8. What should sportsmen do to avoid killing rare species of wildlife?{{U}} S8 {{/U}}.

填空题He ________________________ (把美元兑换成英镑) upon arriving in London.

填空题If you are not sure of an item, you just simply go to the next item and come back to it later when you recall the information of it.

填空题It seems individual cancer cells send out the same distress signals as wounds, tricking immune cells into helping them grow into tumours. The finding suggests that anti-inflammatory drugs could help to combat or prevent cancer. "Lifelong, if you take a small quantity of something that 1 inflammation (炎症), such as aspirin, it could reduce the risk of cancer," says Adam Hurlstone of the University of Manchester, UK. When tissue is wounded or infected it produces hydrogen peroxide. White blood cells called leukocytes (白血球) are among the first cells to react to this 2 , homing in to kill the infectious agent, clean up the mess and rebuild 2 tissue. At first, the tissue becomes inflamed, but this subsides as the wound is cleared and rebuilding continues. Now, a study in zebra fish shows that this process is also instigated (唆使) and sustained by tumour cells. Hurlstone and his colleagues 4 engineered zebra fish so that skin cells and leukocytes would show different 5 under ultraviolet light. Some zebra fish were also engineered to have cancerous skin cells. The team found that the cancerous skin cells secreted (分泌) hydrogen peroxide, 6 leukocytes which helped them on their way to become a tumour. When the team 7 hydrogen peroxide production in the zebra fish, the leukocytes were no longer attracted to cancerous cells and the cancer colonies reduced in 8 More alarmingly, the researchers found that healthy skin cells 9 to the cancerous ones also produced hydrogen peroxide, suggesting that cancer cells 10 co-opt them into triggering inflammation. A. adjacent B. blocked C. changed D. colors E. damaged F. figure G. genetically H. hue I. hurtful J. number K. somehow L. somewhat M. summoning N. suppresses O. trigger

填空题The US started a worldwide arms race and the Cold War With the Soviet Union by bombing Japan.

填空题Around 1910, before the subway started going to Brooklyn the population went beyond a million.

填空题The plants died for want ______ water.

填空题I love traveling by train. Fast (36) slow local trains which stops at every station, (37) trains taking business men to their offices and home again; 1 enjoy them all. It must be the element of romance that (38) to me. There is no romance in a car on a motorway—a box of metal and rubber on a strip of (39) or in flying through the air in a pressurized tube from one (40) plastic and glass airport to another. But trains are different. You can walk around, look at the (41) observe your fellow (42) . In a plane, all you can see are the clouds and the backs of other people's head. Yes, traveling by train is still an (43) , even in England. You try to interpret the timetable, persuade the booking-office clerk to sell you a ticket and (44) Then there's that delightful uncertainty as (45) . Abroad, of course, it's even more exciting, particularly in those countries which forget to put names on their railway stations. Not only are you never certain you are on the right train, (46) .

填空题There are dense forests all over the tropical regions.