6. by accident(=by chance, accidentally)偶然地,意外. without accident(=safely) 安全地,

He did it whether by accident or design.

5. access(to) (不可數(shù)名詞) 能接近,進入,了解

Citizens may have free access to the library.

4. (be) abundant in(be rich in; be well supplied with) 富于,富有

As we know, China is abundant in natural resources.

3. absorb(=take up the attention of)吸引……的注意力(被動語態(tài)):be absorbed in 全神貫注于…… 近:be engrossed in ; be lost in ; be rapt in ;be concentrated on ; be focused on ; be centered on

The children were so absorbed in their game that they did not feel hungry.

2. absence of mind(=being absent-minded)　 心不在焉

Don’t be absent-minded at this very moment.

1. be absent from… 缺席，不在

Is anybody absent from class?

38．(10分)

(10分)⑴①④⑤ 　R基不同　　

⑵脫水縮合　2個　

⑶肽鍵　　 -CO-NH-

(4) C　　

(5) -CH₃　　　 -CH₂-CH₂-COOH　　　 4

37．(16分)

(1)( A )[⑧]細胞壁 [①]葉綠體[⑤]液泡

(2)纖維素、果膠　　 [②]高爾基體

(3)CO₂等物質(zhì)和一定的環(huán)境條件(4)[①]葉綠體

(5)[④] 線粒體　 有氧呼吸

(6)①②④⑤⑥

(7)葉綠體和液泡

(8)[ ⑦ ]核糖體　

(9)( A)(10)4

36．(9分)(1)蛋白質(zhì)、脂肪、糖類(碳水化合物)(3分)

(2)碘液　 藍色　 蘇丹Ⅲ(或蘇丹Ⅳ)　

橘黃色(或紅色)　雙縮脲 　 蛋白質(zhì)

21-30DABDD，BADCD　　　　 31-35ABBBC