请教大全534。537。549

crystal_z_y

、.                             No less an authority than Walter Cronkite has reported that half of all Americans never read a book.

(A) No less an authority than

(B) Nonetheless an authority

(C) Nevertheless authoritarian

(D) Not less an authority than

(E) An authority not less than

    答案是A，             但我不太明白这句话到底是什么意思，主语是那个，另外NO LESS THAN 放在句首应该怎么用。

1.                             Not all employment selection mechanisms that have a “disparate effect,” that is, that screens out a percentage of minorities or women disproportionate to their presence in the relevant labor market, are unlawful.

(A) that is, that screens out a percentage of minorities or women disproportionate to

(B) which means, that screens out a percentage of minorities or women disproportionate with

(C) which means, that screen out a percentage of minorities or women disproportionate with

(D) that is, that screen out a percentage of minorities or women disproportionate to

(E) that is, that screens out a percentage of minorities or women disproportionate with

    答案是D，             请详细解释一下句意和结构，几个THAT 把我都搞混了

1.                             Once an apolitical confrontation of the world’s best athletes, the Summer Olympics have been increasingly politicized in recent years as the superpowers have denied many of the best athletes’ access to competition.

(A) been increasingly politicized

(B) been increasing politicization

(C) been of increasing politicization

(D) politicized, increasingly,

(E) increased politicization

答案是A，整句话的意思？另外.                             Once an apolitical confrontation of the world’s best athletes, 如果是指the Summer Olympics 的话，为什么前后单复不一致呢？

    

jnlvo

534 No less an authority than类似于no less a person than身份不低于(引于字典），算是一种固定搭配。fficeffice" />


537 that is就是which means的意思，只是作插入语，后者表达不对。that is 前后是两个that定语从句修饰主语mechanisms，谓语are unlawful。screen out 筛选出


549 the Summer Olympics夏季奥运会在这里作为一个整体理解，但Olympics有s必需用复数。如果知道1980和1984年奥运会，此句的意思就很好理解。

crystal_z_y

谢谢。只是觉得有时语法比较灵活，很难有个明确的说法。

jnlvo

说得好！不能钻牛角尖。