【正文】 same.( ) 3 ． Magnesium can form an oxide when heated in oxygen.( ) 4． Iron reacts with cold water.( ) 5． Copper reacts most when heated in oxygen.( ) Step 2 Careful－ reading Ⅰ .Choose the best answers according to Passage A. 1． The first sentence “It is hard to think of a world without metals.” will make us think ________. A． metals make up the world B． metals play a greatly important role in the world C． there would be no world if there were no metals D． it is difficult for us to live in the world of metals 2． The table in the passage is arranged in order of ________. A． metal kinds B． reaction activities C． values of metal D． the first letters of the words 3． An oxide is ________. A． a new kind of metals B． a kind of gas C． a product of the reaction D． a factor (因素 ) of a chemical reaction 4． According to the table, which metal is most suitable to make our daily kitchenware (廚房 )? A． Zinc. B． Iron. C． Copper D． Magnesium. Ⅱ .Choose the best answers according to Passage B. 1． Which is NOT the apparatus that is required in the experiment of “Iron in dry air”？ A． Cotton wool. B． Oil. C． Iron nails D． Test tube holder. 2 ． Which is required as one of the apparatus in the experiment of “Iron in ordinary water”？ A． Oil. B． Cotton. C． Bunsen burner D． Test tube holder. 3． The purpose of these two experiments is ________. A． to find out how iron reacts with water and air B． to find out how important iron is C． to find out how to do the experiment of iron39。 ________________________________water.(分?jǐn)?shù)表達(dá)法和分?jǐn)?shù)作主語時(shí)的主謂一致 ) 2． 地球是月球的 49倍 。 英語 路漫漫其修遠(yuǎn)兮 吾將上下而求索 外研版 必修 1 A Lesson in a Lab Module 5 第一課時(shí) Introduction amp。 The earth is _________________________ the moon.(倍數(shù)表達(dá)法 ) Two－ thirds of the earth39。s reaction with water and air D． to find out how to keep iron rustless Step 3 Summary Fill in the blanks according to the text. Different metals have different . When we use metals, it is to know how they with different substances. The reaction of metals with these substances can be put in . From the ， we can find that potassium reacts with oxygen and water while copper doesn39。 搭配 expand on /詳述某事 You mentioned the need for extra funds. Would you expand on that? 你曾提到需要額外資金 ， 詳細(xì)說明一下好嗎 ？ 單詞積累 expansion n. [U]膨脹；擴(kuò)張 expansive adj. 廣闊的；遼闊的 即學(xué)即用 語法填空 —Our pany has ________(expand) its business in Stanford by opening a new branch office there. —Congratulations! 答案： expanded 題意： ——“ 我們公司在斯坦福新創(chuàng)立了一家分公司 ， 拓展了業(yè)務(wù) 。 辨析： substance, matter Sometimes changes take place in matter and the substances never return to their former condition. 有時(shí)物質(zhì)發(fā)生變化 ， 再也不會(huì)恢復(fù)到原來的狀態(tài) 。 答案： substance 3． contract vi.amp。 搭配 contract(wih) sb. to do sth. 就某事與某人簽訂合同 enter into/make/sign a contract簽合同 即學(xué)即用 完成句子 You should see your stomach ________ and expand when you breathe in and breathe out. 答案： contract 題意：當(dāng)你吸氣和呼氣時(shí) ， 你應(yīng)該看到你有腹部收縮和擴(kuò)張 。如： electrical engineering電機(jī)工程學(xué)。t working because of an electrical fault. 這個(gè)炊具不能用了 ， 因?yàn)槌隽穗姎夥矫娴墓收?。 ② electric electric lights電燈 ③ electrical electrical equipment電設(shè)備 5． react vi. (化學(xué) )反應(yīng)；反對(duì) ， 反抗 ① When we use metals, it is important to know how they react with different substances, for example, water and oxygen. 當(dāng)我們使用金屬時(shí) ， 了解金屬和諸如水 、 氧氣之類的不同物質(zhì)如何發(fā)生反應(yīng)很重要 。 ② Our eyes react ________ the light. 我們的眼睛對(duì)光有反應(yīng) 。 知識(shí)拓展 in the form of 以 ?? 的形式 form the habit of 養(yǎng)成 ?? 的習(xí)慣 be in form 處于良好的競(jìng)技狀態(tài) be out of form 處于不良的競(jìng)技