A:背囊(bēi)雪橇(qiāo)戏谑(nüè)大腹便便(pián)
B:腼腆(tiǎn)一瞥(piē)拙劣(zhuó)乌烟瘴气(zhàng)
C:踯躅(zhú)绛红(jiàng)嘀咕(dí)跌宕起伏(dàng)
D:诋毁(dǐ)龌龊(cuò)圈养(juàn)千刀万剐(guǎ)
弹:dàn____ tán____
空:kōng____ kòng____
划:huá____ huà____
Stephen Hawking was not only a great scientist ____ ____ a famous writer.
场源电荷Q=2×10﹣4C,是正点电荷.检验电荷q=﹣2×10﹣5C,是负点电荷,它们相距r=2m,且都在真空中,如图所示.求:
What food will they eat?