题目
Aids is said_____ the biggest health challenge to both men and women over the past few years.
A.that it is B.to be C.that it has been D.to have been
A.that it is B.to be C.that it has been D.to have been
提问时间：2020-07-31
答案
据说…… 有两种表达法：1 sth is said to be 2 It is said that+从句
又句中有明显的暗示：over the past few years 固定用完成时.所以选D.
C 应该为：It is said that aids has been the biggest health challenge
to both men and women over the past few years.
又句中有明显的暗示：over the past few years 固定用完成时.所以选D.
C 应该为：It is said that aids has been the biggest health challenge
to both men and women over the past few years.
举一反三
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．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
最新试题
- 1怎样区分电解质和非电解质,还有能否导电和电解质的关系
- 240个不同的数字有多少种排列组合方法?
- 3将下列俗语或名言补充完整.
- 4Chinese people are always f----to the foreiners
- 5如图所示为一个棱长6厘米的正方体，从正方体的底面向内挖去一个最大的圆锥体，则剩下的体积是原正方体的百分之_（保留一位小数）．
- 6(改错题）Last week she book?
- 7求二次函数f(x)=x²-2(2a-1)x+5a-4a+5在X在（0,1）上的最小值g(a)的解析式
- 8设函数 y = cos2x / (x-1) 求 dy
- 977分只7怎么化小数?
- 10设函数f(x)连续,则d∫xf(x^2)dx=?
热门考点
- 1六1班同学上体育课,排成3行少1人,排成4行多3人,排成5行少1人.上体育活动课的同学至少有多少人
- 2当a≤1/2，化简：1−4a+4a2+|2a-1|=_．
- 3Every possible measure have been taken by the government to prevent the riving from being polluted
- 4找出课文中描写天游峰的句子,抄一抄,想一想这些句子在描写上的特点
- 5历史上有哪些有重大发明和重大发现而遭受到驱逐和迫害的科学家他们都遭受了怎样驱逐和迫害
- 6七年级数学应用题的答题格式
- 7已知f(x)=x^3+x(x属于R),a,b,c也属于R,且a+b大于0,b+c大于0,c+a大于0,则f(a)+f(b)+f(c)的符号为A．正 B．负 C．等于0 D．无法确定
- 860.42的负2次方乘以18.2的2分之5次方等于多少
- 9请问同步电动机为什么可以通过调节励磁电流来改变功率因数?
- 10已知ABC为一个三位数,由A、B、C三个数字组成的另外五个三位数之和为2006,