[考題] 四題文法改錯，請高手幫忙

[soiris (iris)]

1. Airports must (A)[be located]
(B)[near to] major population centers
for the advantage of
(C)[air transportation]
(D)[to be retained].

答案為B
請問是要把near去掉嗎？

2. Although we are
(A)[concerned about] the problem of
Energy sources, we (B)[must not] fail
(C)[reconizing] the need (D)[for]
environmental protection.

答案為C
請問reconizing要怎麼改？

3. Dairying (A)[is] concerned not only
(B)[with]the production of milk,
(C)[but] with the manufacture of milk
products (D)[such as] butter and
cheese.

請問C要怎麼改？
不是not only... but (also)... 嗎？

4. An unexpected (A)[raise] in the
cost of living (B)[as well as] a decline
in employment opportunities has
(C)[resulted in] the (D)[rapid]
creation by Congress of new
government programs for the
unemployed.

請問A要怎麼改？我查字典raise當名詞有升起的意思，難道要改raising?

唉！每次遇到文法改錯就被打趴！
還有很大的努力空間！還請大家能幫忙解答。非常感激！(T ^ T)

[手機發文，如排版不佳請見諒]


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推 tom91002:1. near  2. to recognize  3. 沒錯  4. rise
推 vicario837:raise和rise的不同最好的記法是從動詞1)sth raises sth
→ vicario837:2)sth rises 一個是及物 一個是不及物 換成名詞後意思
→ vicario837:就很明顯了 自己上升的是rise 被某人/事提升的是raise
→ vicario837:後者舉個例子 My boss gave me a raise.我老闆幫我加薪
→ soiris:請問第三題是因為沒有also嗎？但是also不是可省略嗎？@@
→ tom91002:所以我覺得沒錯啊
推 apoka:3有逗號，後面要接完整的句子
推 apoka:應該說因為but，所以逗號後要接完整的句子（？）
推 youtuuube000:也許是因為要去掉逗號?  但題目沒刮逗號.......
推 oslue:3. strictly speaking, it should be "not only...but also"
推 apoka:仔細研究後好像有comma也沒什麼錯@@
→ youtuuube000:好像也是@@這題答案真的怪怪的@@