题干

下列各项所用修辞不同的一项是(    )

A:从高速飞行的舰载战斗机上往下看,航母就像汪洋中的一片树叶,在海上起伏行进。

B:歼15舰载机像凌波海燕,轻巧灵活地调整好姿态飞至舰艉后上方。

C:辽阔的海面上,我国第一艘航空母舰———辽宁舰斩浪向前。

D:刹那间,疾如闪电的舰载机在阻拦索系统的作用下,滑行数十米后,稳稳地停了下来。

上一题 下一题 0.0难度 选择题 更新时间:2017-12-13 10:22:12

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C

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    A drug that is used to treat serious bleeding could save thousands of lives of mothers giving birth. A world test of the drug found it reduced (降低) the risk of bleeding deaths during childbirth by nearly one third. The study included 20,000 women in 21 countries, mainly in Africa and Asia. The test was carried out by London School of Hygiene and Tropical Medicine. The drug is called tranexamic acid (凝血酸). It is low-cost and researchers said it does not cause serious side effects (副作用) for mothers or babies.

    The drug is used to treat mothers for serious bleeding during childbirth. Postpartum hemorrhage (产后出血) is the main cause of mothers' death around the world, according to the World Health Organization.

    Haleema Shakur is the project director for the test. She said though medical condition is improved in many countries, serious bleeding after childbirth remains a big problem in some parts of the world. “It's one of the biggest killers of mothers. In Africa and Asia, about 10% of women will end up with serious bleeding.” The drug works after a mother gives birth.

    Shakur said the best results were reported when the drug was given to women as soon as possible after childbirth. “The earlier you give it — within the first three hours after giving birth — the better the result is.”

    The next step will be to provide training for doctors and nurses on how to use it and then to find where the drug is needed. During the test, women were given the drug in a hospital. But researchers are looking for easier ways to use the drug so it can be more widely used in small clinics and the countryside.