既然疫苗有效率代表的是疫苗试验的情况,那么不同种类的疫苗可以放在一起比较吗?哪些因素会影响试验的结果呢? 拉塞尔教授表示:“测量疫苗效力的方法是存在差异的。在临床试验中,不同试验...
that(同名异物,特指,可代替可数名词和不可数名词) The population of China is much larger than that of Japan. ?those(同名异物,特指,可代替可数名词复数)。 The house Jack lives in looks quite different than those in the neighborhood. ?one(同名异物,泛指,代...
(2) There is one year between us. 我们之间相差一岁。 (3)She is three years old than I她比我大三岁。 (4) They have increased the price by 50%. 他们把价格上涨了50% 6、what 引导的名词性从句 (1) what 引导主语从句 例:What surprised me is that everybody ...
2. 从句中有具体时间状语,即使从句动作发生在主句动作前,仍然用一般过去时。 The teacher told us that she was born in 1982. 学完知识点,不妨来动手试一试! 01 I hope ___ every one ...
The Chinese media doesn't report news. It reports propaganda. This is the biggest one.“中国不是调整病例统计方式，而是瞒报了病例数。想想这种说法。无论中国发布什么数据，...
更多内容请点击：全球疫苗那么多,哪一个效果最好?澳大利亚专家:没有 推荐文章