Cho P = (-1) · (-2) · (–3) · (-4) · (-5). a) Xác định dấu của tích P. b) Dấu của P thay đổi thế nào nếu đổi dấu ba thừa số của nó?

Các câu hỏi liên quan

mình cần gấp 150. ________do you go to the movies ? _ Twice a month. A. How many B. How often C. How much D. How long 151. The book is________the chair. Please put it on the table. A. in B. at C. under D. from 152. We are going to ________in a hotel. A. speak B. visit C. stay D. say 153. Which ________do you speak ? A. nationality B. language C. country D. nation 154. ________does Peter go jogging?- Everyday A. How often B. How C. How Long D. When 155. Do you go to school ________ bus? A. on B.by C.with D. at 156. I often ________ to music in my free time. A. watch B. see C. visit D. listen 157. What ________you do?- I’m a student. A. does B. do C. are D. is 158. They________go camping because they don’t have a tent. A. always B. sometimes C. never D. often 159. When it’s________, Ba goes swimming. A. cold B. cool C. warm D. hot 160. Lan is going ________ a picnic this Sunday. A. have B. having C. to have D. has 161. What is your sister doing now?- She ________. A. is cooking B. are cooking C. cook D. cooks 162. There is____ water in the bottle. A. any B. many C. some D. a 163. What color is _______ hair ? It’s black A. your B. you C. me D. I 164. We go to the movies________ Sunday evening. A. to B. at C. on D. in 165. It's very ________ in the winter. A. cold B. hot C. cool D. warm 166. - How ________ is a sandwich? - It's 2,000 dong. A. many B. much C. old D. often 167. - How________ does she go jogging? - Every evening. A. many B. much C. often D. old 168. ________ is the weather like in the summer? A. What B. Which C. How D. Where 169. The Nile river is the ________river in the world . A. long B. longer C. longest D. shortest

chỉ cần ghi đáp án 130. - How ________do you listen to music? - Once a week A. far B. long C. often D. times 131. What is the weather like in summer ? A. hot B. cold C. cool D. warm 132. I am from Viet Nam. I speak________ A. Vietnamese B. Chinese C. English D. Japanese 133. He is interested ________English. A. in B. at C. of D. with 134. You are good ________Math. A. in B. at C. on D. with 135. He stays ________a week. A. with B. in C. for D. at 136. Minh stays ________ his friends. A. in B. with C. for D. at 137. There are twenty-five pupils ________ in my class. A. on B. in C. of D. at 138. I don’t go to school ________Sundays A. in B. at C. on D. for. 139. How ________do you go to fishing? - Once a week. A. usually B. sometime C. often D. never 140. I ________like some orange juice. A. can B. could C. will D. would 141. Ho Chi Minh City is the ________city in Viet Nam A. larger B.large C. largest D. very large 142. How ________students are there in your class ? There are 45 A. much B. many C. long D. old 143. How ________kilos of meat does Lan want? A. much B. many C. long D. often 144. We have ________and beautiful forests A. long B. big C. tall D. short 145. _______ going to HaLong Bay ? A. How about B. What about C. Why don’t we D. A and B are right 146. The weather is often ________in fall. A. cold B. warm C. cool D. hot 147. There isn’t ________milk in the bottle. A. some B. any C. a D. an 148. ________Nam like hot weather ? A. Is B. Does C. Do D. Be 149. ________eggs do you want ? A. How many B. How often C. How much D. How old