— ________ they have a computer?
— Yes, they ________.
A:Does; does
B:Do; don't
C:Do; do
D:Does; do
7+8=( )
如图是“绿叶在光下制造淀粉”的实验示意图,据图回答以下问题:
有权选举、决定新一届国家机构领导人员的机关是( )