—Every day, my mother tries to spare some time to chat with me,        she  is very tired after a whole day’s hard work.

—You are lucky to have such a great mum!

A．unless

B．whether

C．although

D．until

“对于公民来说，凡法无禁止就是自由的；而对于政府来说，凡法无授权就是当禁止。”这句话表明[ ]

A、政府的权力小于公民的权力

B、从根本上来讲，政府的权力来源于宪法和法律

C、政府的权力受到制约，公民的权力不受制约

D、政府必须严格按照法律规定的权限行使权力