蛙式试验用于检查______。

In the near future, more advances in the robot technology ________ by scientists.[ ]

A. are making  

B. are made

C. will make  

D. will be made

With more than 200 million views worldwide．the latest video Gangnam Style        very popular since it____________.

A．has become；was uploaded

B．became；uploaded

C．became，was uploaded

D．has become．is uploaded

如图在倾角为θ的足够长斜面顶端A处以速度v₀水平抛出一小球，落在斜面上的某一点B处，设空气阻力不计，求

（1）小球从A运动到B处所需的时间t；

（2）小球从A运动到B处的位移大小s．

由于票据为完全有价证券，权利与证券完全结合，因而，在进行票据付款的时侯，付款人得要求收款人将已受取______一事，明确记载于该票据，然后将票据交付于付款人。

男，35岁，头痛半年加重1周，左侧肢体无力，影像检查如图所示，最可能的诊断为（）

A.脑血管畸形

B.脑梗死

C.脑出血

D.脑炎

E.脑静脉性血栓