experts have found that the disease will lead to a great increase
题目
experts have found that the disease will lead to a great increase
Experts have found that the disease will lead to a greater increase in the number of sufferers unless seriously when the symptom first appears.
A.treated B.having treated C.be treated D.to be treated
答案是A 求详解 谢谢~
答案
unless 后面接句子: unless they were treated
我们将主语和谓语的助动词省略,就是unless treated.
我们常用的if possible 就是if it is possible 的省略说法.
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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