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2 năm trước
Xà phòng hóa hoàn toàn 201,5 gam một chất béo trung tính bằng 500ml dd KOH 2M, cô cạn dd thu được 234,5 gam chất rắn khan. CTCT của chất béo là: A. (C15H29COO)3C3H5 B. (C15H31COO)3C3H5 C. (C17H35COO)3C3H5 D. (C17H33COO)3C3H5
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180: Miss Lan: Are ..................... your students? Mr Lam: No, they aren’t. A. this B. that C. those D. their 181: Na: ....................... do you feel, Lan? Lan: I’m tired and hungry. A. What B. How C. When D. Which 182:I am thirsty. I ........................ like some orange juice. A. am B. have C. can D. would 183: We hear the noises with our .............................. . A. eyes B. nose C. ears D. mouth 184: What’s ........................... lunch today? Bread or rice? A. on B. for C. in D. of 185: There is some fruit juice here but there isn’t .......................... milk. A. a B. an C. any D. some 186: Mom: Would you ............................. noodles? Lan: Yes, please. A. want B. like C. has D. have 187: Orange juice is my ............................ drink. A. like B. cold C. hot D. favorite 188:Ba: ...... there any fruit for dinner, Mom? Yes, there are some bananas and apples. A. Are B. Is C. Have D. Has 189: I’m not ............................. . I’m full. A. thirsty B. hungry C. cold D. hot 190: - What is ............................. to drink? - Orange juice and Coke. A. this B. that C. there D. have 191: - What is the .........................., Dung? Are you cold? - Yes, and hungry. A. that B. matter C. this D. there 192: On my way to school, I .............................. the wind on my face. A. see B. taste C. feel D. smell 193: Nga is hot. She wants a ......................... drink. A. hot B. cold C. new D. nice 194: I .......................... noodles in a restaurant. A. feel B. drink C. hear D. taste 195: Mai likes milk but she .......................... like coffee. A. isn’t B. hasn’t C. doesn’t D. aren’t 196: Ba is tired. He’d like to ............................ . A. run B. sit down C. learn D. work 197: Is there ............................ English book in your bag? A.an B. a C. any D. some 198: We’re ......................... . We’d like some rice and chicken. A. thirsty B. cold C. hot D. hungry 199: Fish is my favorite ............................. . A. drink B. food C. fruit D. like 200: I like iced tea. I ......................... like lemonade. A. am not B. doesn’t C. don’t D. isn’t

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