It was not until 1920 ___ regular radio broadcasts began.

when

which

that

since

此題考查強(qiáng)調(diào)句。句意為：直到1920年，常規(guī)的電臺才開始。這句話把it is/was和that去掉后，仍是完整的一句話，因此我們可以知道這是一個強(qiáng)調(diào)句，而且是對not...until“直到...才”的強(qiáng)調(diào)。結(jié)構(gòu)是：it is/was+not until+其他成分。故選:C.

Going on a trip into         space must be quite         exciting experience.

/; the 

/; an

the; the 

the; an

考查冠詞。句意：太空旅行是令人興奮的經(jīng)歷。第一空不填，space前面不加冠詞，第二空后面的experience作“經(jīng)歷”時是可數(shù)名詞，表示“一次令人興奮的經(jīng)歷"。exciting首字母的發(fā)音為元音音素，因此應(yīng)填an。故選B項(xiàng)。

Why don't you             ? Try to make it a win-win situation for you both.

compromise

object

salute

rate

考查動詞詞義辨析。句意：你為什么妥協(xié)呢？試著為你們雙方創(chuàng)造

雙贏的局面。A.compromise妥協(xié)；B.object反對；C.salute致敬；D.rate比率。由后文試著為你們雙方創(chuàng)造雙贏的局面，可知前面講的是妥協(xié)。故選A項(xiàng)。

---It's burning hot today,isn't it?

---Yes,_____yesterday.

So was it

So it was

So it is

So is it

句意：“今天太熱了，是不是？”“是呀，昨天也一樣”。如果表示前面所說的肯定情況也適合于另一者，要用“so+助動詞/情態(tài)動詞/系動詞+主語”。

I have no one        me. for I am a new comer here.

help

helping

to help

to have helped

考查非謂語動詞的用法。句意：我沒讓人幫我，因?yàn)槲沂切聛淼?。根?jù)句意可知句子空格處非謂語動詞作定語，用了have sb /sth to do的結(jié)構(gòu),意為“讓某人做某事”。故選C項(xiàng)。

It has been warned that        to the surroundings with people infected by Covid-19 without any

protection can lead to severe result.

being exposed

exposed

having exposed

to expose

考查非謂語動詞。句意：有人警告稱，在沒有任何保護(hù)措施的情況下，暴露在有感染 Covid-19的人環(huán)境中會導(dǎo)致嚴(yán)重的結(jié)果。分析句子結(jié)構(gòu)可知expose在句中應(yīng)用非謂語動詞形式，表示“暴露”短語為be exposed to,且從句中缺少主語，expose 與主語people是被動關(guān)系，故應(yīng)用動名詞的被動式作主語。故選A項(xiàng)。

Dr.Rowan,           secretary resigned two weeks ago, has had to do all his own typing.

whose

of whom 

of which

which

考查定語從句。句意：羅文博士的秘書兩周前辭職了，他只能自己打字。          secretary resigned two weeks ago是非限制性定語從句，修飾Dr.Rowan, 引導(dǎo)詞在從句中作定語，表示“Dr.Rowan's”，表示“......的”，應(yīng)用關(guān)系代詞whose引導(dǎo)該從句。故選A項(xiàng)。

Really? You        twice the price to buy the book!

paid

took

spent

cost

考查動詞詞義辨析。句意：真的嗎？你付了2倍的價(jià)格買這本書！四個動詞都有“花費(fèi)”的意思，但用法不同。pay的主語通常是人，常用結(jié)構(gòu)是 sb pay (money) for sth;take作“花費(fèi)”時講常用于固定句型 It takes/took sb (money/time)to do sth做某事花費(fèi)某人（金錢/時間）；spend的主語通常是人 sb spend...on sth 或sb spend ...(in) doing sth;cost的主語通常是物，sth cost sb (money)意為“某物花了某人多少錢。本題主語是人，結(jié)合句意和后文to buy the book，空格處應(yīng)填pay。故選A項(xiàng)。