语法题请教

wxt

语法题请教：

The harmonica’s ( tones )are made by the vibrations of the reeds (created by) the
                          A                                                                     B
(blowing) and suction (to) the player.
     C                          D

答案是D， 为什么，怎么改啊？

A large (collections )of material ( focused )on Louisiana’s (history) and culture (is

provided )by the Williams Research Center in New Orleans.

A collection of 是不是一个固定词组呢？答案是A

redpassion

1，by,player是主动者
2，很明显A是修饰collection的
这不是固定词组
这是固定结构
定冠词+名词+of

wxt

谢谢,这儿还有两题:
The Canada province of NF (has) a rocky coast, a (moisture climate), and (probably the best cod-fishing) (areas) in the world.

Answer is A, correct answer is “have”, why??

-------------ballet dancers learn five basic positions for the arms and feet.
(A)    All of
(B)    Of every
(C)    All
(D)    Every
Answer is C, what’s the difference between “ALL OF ” and “ALL”??

wxt

谢谢, 不过我觉得1. 应该把 to 改为of



这儿还有两题:
The Canada province of NF (has) a rocky coast, a (moisture climate), and (probably the best cod-fishing) (areas) in the world.

Answer is A, correct answer is “have”, why??

-------------ballet dancers learn five basic positions for the arms and feet.
(A)    All of
(B)    Of every
(C)    All
(D)    Every
Answer is C, what’s the difference between “ALL OF ” and “ALL”??