【C20】A．spotB．stageC．platformD．screen

Her speciality is heart surgery.A．regionB．siteC．platformD．field

【B19】______A．spotB．schemeC．deadlineD．era

【31】A．spotB．identifyC．detectD．notice

【C7】A．levelB．stageC．aspectD．layer

【C2】A．fashionB．philosophyC．platformD．settlement

The sports facilities include（).A、tennis courtsB、football fieldC、platformD、stadium