灯泡L1、L2串联, 用电流表测得灯L1的电流是0.3 安, 则 通过灯L2的电流为: A、0.3安; B、0.6安; C、0.9安; D、0.15安
下列各组词语中,没有错别字的一组是 A.座落 潜移默化 嘉宾 获
(14分)下图为甲种遗传病(基因为A、a)和乙种遗传病(基因为B、b)的家系图。其中一种遗传病基因位于常染色体上,另一种位于X染色体上。请回答
依次填入下列各句横线处的词语,恰当的一组是 (1)这几天 上出现了不少谣言,胡说什么“西方的吉祥云彩就要飘过来了”。 (2) 在孔繁森身上
Exhausted,covered in mud and desperately hungry,a team of Swedish athletes sat down for a meal as they prepared to take on a dangerous 20-mile trek through the Ecuadorian rainforest. As
As neither of the two countries would ________, no agreement has been reached till now. A. give up B. give away C. give in D. give off
In 1971 a young man who grew up very poor was travelling across the country, trying to make a new start for himself. Along the way he had completely run out of money and was forced to spend the night