【題目】閱讀下面短文,在空白處填入 1 個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。

In late April 2014, a 1 (violence) storm swept through the southern United States, destroying more than $ 1 billion in property and killing 35 people. But a group of migratory(遷徙的) birds in eastern Tennessee sensed the oncoming mess and left long before the first clouds arrived. A year 2 (early), the team had tagged golden-winged warblers ( ) with leg trackers 3 (study) their annual migrations to South America. Two days before the storms 4 (strike),five golden-winged warblers slipped away, traveling nearly 700 kilometers south to the Florida coast.

It's the first time that the birds which normally migrate with the seasons 5 (observe) to slip away when a big storm hits. The researchers suspect this 6 (behave) occurs only when the threat of injury outweighs the energy costs of a long trip. But nobody knows 7 the birds guessed the storm's severity and left so soon. Puzzled by it, the scientists initially reasoned that delicate changes in weather — atmospheric pressure, temperature, wind speed, cloud cover, or rainfall signaled 8 upcoming disaster. Yet when they checked weather records, none of these factors waved significantly 9 the storm. Instead, the team assumes that the 10 (approach) storms created a disorder of infrasounds—low-frequency sound waves that birds can hear, but humans can't.

【答案】

1violent

2earlier

3to study

4struck

5have been observed

6behavior

7how

8the

9before

10approaching

【解析】

本文是說(shuō)明文。20144月下旬在一場(chǎng)暴風(fēng)雨席卷美國(guó)南部的時(shí)候,科學(xué)家之前在腿上戴了跟蹤器的5只金翅鷹飛走了?茖W(xué)家們對(duì)鳥(niǎo)兒是如何猜到暴風(fēng)雨的嚴(yán)重程度這一問(wèn)題感到疑惑不解。他們認(rèn)為是即將來(lái)臨的風(fēng)暴產(chǎn)生的一種紊亂的低頻聲波,鳥(niǎo)兒可以聽(tīng)到,而人類卻不能。

1考查形容詞。句意:20144月下旬,一場(chǎng)猛烈的暴風(fēng)雨席卷了美國(guó)南部。修飾名詞storm,應(yīng)該用形容詞;violence是名詞, 形容詞為violent。故填violent

2考查形容詞比較等級(jí)。句意:一年前,研究小組給金翅鶯戴上了腿部追蹤器。根據(jù)句意,此處是指與現(xiàn)在相比更早的時(shí)間,因此用形容詞比較級(jí);early的比較級(jí)為earlier。故填earlier。

3考查非謂語(yǔ)動(dòng)詞。句意: 一年前,研究小組給金翅鶯戴上了腿部追蹤器,以研究他們每年向南美的遷徙情況。 分析句子結(jié)構(gòu),此處用不定式作目的狀語(yǔ),意思為為了…...”。故填to study

4考查時(shí)態(tài)。句意:風(fēng)暴襲擊前兩天,五只金翅鶯溜走了。分析句子結(jié)構(gòu),所填詞是謂語(yǔ)動(dòng)詞;全文敘述的是過(guò)去的事情,用一般過(guò)去時(shí);strike是不規(guī)則變化動(dòng)詞,過(guò)去式為struck。故填struck

5考查時(shí)態(tài)和語(yǔ)態(tài)。句意: 這是第一次觀察到通常隨季節(jié)遷徙的鳥(niǎo)類在大風(fēng)暴來(lái)襲時(shí)會(huì)飛走。句型It is the first time that…“這是第一次….”,that后的從句用現(xiàn)在完成時(shí);主語(yǔ)the birdsobserve之間是邏輯上的被動(dòng)關(guān)系,因此用現(xiàn)在完成時(shí)的被動(dòng)語(yǔ)態(tài)。故填have been observed

6考查名詞。句意:研究人員懷疑,這種行為只有在傷害的威脅大于長(zhǎng)途旅行的能量消耗時(shí)才會(huì)發(fā)生。分析句子結(jié)構(gòu),所填詞在句子中做主語(yǔ),應(yīng)該用名詞;behave是動(dòng)詞,名詞形式為behavior。故填behavior

7考查從屬連詞。句意: 但沒(méi)人知道鳥(niǎo)兒是怎么猜到風(fēng)暴的嚴(yán)重程度,那么快就離開(kāi)了。分析句子結(jié)構(gòu),空后是knows賓語(yǔ)從句,所填詞是賓語(yǔ)從句的連接詞;根據(jù)句意,應(yīng)該為鳥(niǎo)兒怎樣猜測(cè)到暴風(fēng)雨的嚴(yán)重程度,因此用how引導(dǎo)賓語(yǔ)從句。故填how

8考查冠詞。句意:科學(xué)家們對(duì)此感到困惑,他們最初認(rèn)為是天氣的微妙變化—— 壓、溫度、風(fēng)速、云量或降雨——預(yù)示著這場(chǎng)即將到來(lái)的災(zāi)難。此處用定冠詞the 表示特指,指上文提到的災(zāi)難。故填the。

9考查介詞。句意: 然而,當(dāng)他們檢查天氣記錄時(shí),這些因素中沒(méi)有一個(gè)在風(fēng)暴之前發(fā)生了明顯的波動(dòng)。上文提到“upcoming disaster(即將到來(lái)的災(zāi)難)”,根據(jù)常理,應(yīng)該是在暴風(fēng)雨前沒(méi)有跡象。 故填before。

10考查形容詞。句意:相反,該小組認(rèn)為,即將來(lái)臨的風(fēng)暴產(chǎn)生一種不規(guī)則的次聲低頻聲波,鳥(niǎo)類可以聽(tīng)到,但人類不能。修飾名詞storms,前面應(yīng)該是定語(yǔ);approach是動(dòng)詞,用形容詞approaching做定語(yǔ),意思為即將來(lái)臨的。故填approaching。

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