A:It is what that
B:Is it that what
C:What is it that
D:What it is that
有等质量的镁和铁,前者放入质量分数为10%的稀硫酸中,后者放入质量分数为10%的稀盐酸中,产生氢气的质量随时间变化曲线如图所示。下列说法错误的是
读句子,选择适当的词组完成句子。
plant trees by hand cut down one by one have to
a little fall asleep fish and chips a few praise...for
读中国人口分布图,回答问题.
—I can't stand swimming in cold rivers in winter.
—But it's for your health. You know I often swim in rivers in different seasons.