It was with great joy _______ he received the news ____ his lost son would soon return home.
A：because; that
B：that; that
C：because; which
D：that; \
你去上海探亲，向一位老人问路……
下列各项中，没有语病的一项是 （ ）
①能自主复制 ②不能自主复制 ③结构很小 ④蛋白质 ⑤环状RNA ⑥环状DNA ⑦能“友好”地“借居”
下列关于哲学和世界观的说法中，正确的有（ ）
