Question

【題目】閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個(gè)單詞）或括號(hào)內(nèi)單詞的正確形式。

No one knows 【1】 (exact) how the earth began, as it happened so long ago. However, according to a widely 【2】 (accept) theory, the universe began 【3】 a “Big Bang” that threw matter in all 【4】 (direction). For several billion years after the “Big Bang”, the earth was still just a cloud of dust. 【5】 it was to become was 【6】 (certain) until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. The earth became so 【7】 (violence) that it was not clear 【8】 the shape would last or not. It exploded loudly with fire and rock. They were in time 【9】 (produce) carbon dioxide, nitrogen, water vapour and other gases, which were to make the earth’s atmosphere. What is even more important is that as the earth cooled down, water began to appear on 【10】 surface.

Answer 1

【答案】

【1】exactly

【2】accepted

【3】with

【4】directions

【5】What

【6】uncertain

【7】violent

【8】whether

【9】to produce

【10】its

【解析】

試題分析：文章講述了地球最初形成時(shí)期的一些現(xiàn)象及逐漸變化的過程。

【1】exactly 考查副詞。修飾動(dòng)詞know要用副詞，此處指確切地知道，故填exactly。

【2】accepted 考查動(dòng)詞。此處指“廣泛被接受的理論”，過去分詞表被動(dòng)作定語，故填accepted。

【3】with 考查介詞。begin with“開始于”，是固定短語，故填with。

【4】directions 考查名詞。此處指“物質(zhì)向各個(gè)方向飛濺”，direction是可數(shù)名詞用復(fù)數(shù)形式，故填directions。

【5】What 考查代詞。指“地球要成為什么樣子”， 此處用What引導(dǎo)主語從句，故填What。

【6】uncertain 考查形容詞。句意：地球要成為什么樣子是不確定的。形容詞作表語，根據(jù)句意填uncertain。

【7】violent 考查形容詞。此處作系動(dòng)詞became的表語用形容詞，指地球變得如此猛烈，故填violent。

【8】whether 考查連詞。與or not連用表示“是否”，指地球形狀是否能維持。故填whether。

【9】to produce 考查不定式。用于系動(dòng)詞were后不定式作表語，指即將發(fā)生的事，故填to produce。

【10】its 考查代詞。此處指地球的表面，是第三人稱單數(shù)用its指代“地球的”，故填its。