【正文】 e the things you can think of： the desire to explore a foreign and unique environment， the excitement of being the first humans to open up a new world，the expectation of fame and glory...For scientists there is another observations and research will probably lead to great scientific achievements. ? Donal Trollop， Canada ? There are already too many people on the think that sometime before the end of the century， there will be a human colony(殖民地 )on will happen when people finally realize that twoway trips to the red pla Mars are of the danger of space flight is in the launches(發(fā)射 )and the trip home would therefore reduce the danger of accidents，save a lot of money， and open the way to building an everlasting human settlement on another world. ? Enough supplies can be sent on ahead，and every two years more supplies and more people will be sent to the new has all the materials for a colony to produce or make everything it needs， and Mars is far more pleasant than the other plas in the outer space. ? Paul Davies， USA ? 1． The main purpose of Steve Minear39。 ? 2． Which of the following best states Donal Trollop39。由文章倒數(shù)第二段中． ..when people finally realize that twoway trips to the red pla Mars are ，人們最后將意識到到火星上后再返回到地球是沒有必要的。 。 ? 4． What does Paul Davies think of human existence on Mars? ? A． Humans will have to bring all they need from the Earth. ? B． Humans will find Mars totally unsuitable for living. ? C． Humans can produce everything they need. ? D． Humans can live longer in the colony on Mars. ? 答案與解析： C 細(xì)節(jié)理解題。由第二段中 Here are the things you can think of： ...there is another ，人們?yōu)槭裁匆セ鹦遣⑶矣啦环祷?，原因多種多樣。 discussion ? B． to invite an answer to his question ? C． to explain the natural state of Mars ? D． to show his agreement on going to Mars ? 答案與解析： B 文章意圖題。d rather say Mars is totally unsuitable for human won39。 the B．不填； a ? C． The。 ? C. a。 a ? C． /。 a B．不填； 不填 ? C．不填； a D． the。安徽名校聯(lián)考 )When you cover the novel， you will have ________ better understanding of ________ life. ? A． a。s no secret ________ maths can be a challenging subject for just about anyone to master. ? A． that ? B． whether ? C． because ? D． why ? 解析： 由句中的 “ can” 知不確定意義，故選 why。句意：我并不是說我反對這個計劃，但問題是他們的所做所為與他們所說的不一致。 ? 答案： D ? ④ (2020根據(jù)句意，用 whether。 that引導(dǎo)主語從句，在從句中不作句子成分， it是形式主語。連詞 that和 whether在從句中不充當(dāng)成份，連接代詞和連接副詞在從句中充當(dāng)成份，主語從句用陳述語序。因為 return為非延續(xù)性動詞，故不能直接與until連用，先排除 A、 B兩項。如： ? It is not until 11 o39。t reach the station until after the train had left. ? 直到火車開走之后，他們才到達(dá)車站。 ? She didn39。如： ? I won39。如： ? We waited until/till he 到他來。 ? I didn39。ll never fet such an attractive city ________ I spent many happy hours there with my classmates last summer holidays. ? A． that B． where ? C． in which D． because ? 解析： 根據(jù)上下文語意知后面是原因狀語從句。南昌模擬 )—How can they inform Audrey of their project? ? —________ they had her address. ? if B． Only if ? C． If only D． Now that ? 解析： now that“ 既然 ” ； what if“ 假如 ?? 會怎樣 ” ； only if“ 只有 ” ； if only“ 要 ?? 該多好 ” 。 ? Seeing that it is eight