问题
选择题
下列选项是对物理量的估测,其中最接近实际的是( ) A.一个鸡蛋的质量约为500g B.人体正常体温为约37℃ C.一张报纸平放在桌子上对桌子压强约为100Pa D.光的传播速度为3×108m/s |
答案
答案:B
下列选项是对物理量的估测,其中最接近实际的是( ) A.一个鸡蛋的质量约为500g B.人体正常体温为约37℃ C.一张报纸平放在桌子上对桌子压强约为100Pa D.光的传播速度为3×108m/s |
答案:B
用所给词的适当形式填空。 | |
2. If you want to improve your spoken English, you will talk with some ________ in the English corner. 3. Is ________ a walk after meal good or bad? 4. My brother _________ on May 15, 1992. 5. David Beckham is a ________ football player. |