【正文】 en the planes are to take off【答案】 D 【解析】【分析】句意: 飛機(jī)什么時(shí)候起飛已經(jīng)宣布了嗎？此處是when引導(dǎo)的主語從句，且要用陳述句語序，故選D。 ifD.例如：Whether she is ing or not doesn39。How【答案】 B 【解析】【分析】句意：他是否提供幫助對(duì)于我們的成功沒有什么關(guān)系。 because【答案】 A 【解析】【分析】考查名詞性從句的連接詞。9．They lost their way in the forest, and ________ made matters worse was that night began to fall. A.WhyWhich【點(diǎn)評(píng)】考查主語從句的引導(dǎo)詞。分析句子可知，主語從句中的謂語動(dòng)詞makes 缺少主語，主語從句中缺少賓語一般用what，因此選擇 what 來引導(dǎo)主語從句；系動(dòng)詞 is 后面的表語從句句意完整，不缺少成分，因此選擇 that 引導(dǎo)表語從句。B.D.13．________ is the centre of our planetary system was a difficult concept to grasp in the Middle Ages. A. 【點(diǎn)評(píng)】考查名詞性從句，本題涉及that引導(dǎo)的主語從句。it。D.It if this song is worth listeningC.根據(jù)句子結(jié)構(gòu)分析，本句是賓語從句，根據(jù)主句I never doubt，可知從句是陳述句，故排除A 和B，又因?yàn)閘isten to為固定搭配，故選D。Which連接詞引導(dǎo)一個(gè)主語從句，并在主語從句中做句子的主語，故選D。分析句子可知，_____Macao has achieved為主語從句，從句中achieve缺少賓語，所以第一個(gè)空用what來充當(dāng)賓語。howFestivalonmakes Day你是否會(huì)在新年做決定。how happy he wasC.21．—What are you looking for?—My keys. I can39。whathow【點(diǎn)評(píng)】考查how引導(dǎo)的表語從句。 25．—I39。B.但是我不知道去哪里？——巴黎如何？ to go什么時(shí)候去， to go去哪里， to do做什么。what the bridge is supposed to be built should be the crossriver traffic is the heaviest. A.at which。 where定語從句，代指地方，用where/介詞+which，根據(jù)the place，可知前面用介詞at，表示在……地方，做地點(diǎn)狀語，介詞提前，因此用at which；根據(jù) the crossriver traffic is the heaviest，可知是對(duì)橋所在地點(diǎn)的描述，因此用where，引導(dǎo)表語從句，故選C。D.that。B.30．He took a trip to Beijing last week and ________ he saw at the Forbidden City impressed him deeply. A.C.。D.what。 that故選D。 they visited the other day? A.28．Is this school wherebecause【答案】 D 【解析】【分析】句意：——我感覺不舒服。 【點(diǎn)評(píng)】考查名詞從句，注意where to go的用法。t know ________. —How about Paris?A.was changing【答案】C 【解析】【分析】句意：人工智能將會(huì)怎么改變我們的生活方式和整個(gè)世界仍舊不為人所知。will changechangedchangewhat did I put them【答案】 C 【解析】【分析】題意：你正在找什么？我的鑰匙。what I put themC.where did I put themA，C錯(cuò)了。onMidAutumnreallyyou故選B。18．_____Macao has achieved shows _____one country, two systems principle is the best solution to the