【简答题】0verall there are more speakers of Chinese than of________________
【单选题】梯形教室讲台上有9人,台下有x人,一共有( )人。
【判断题】Glutamate is the main inhibition transmitter in nervous center.
【判断题】制备感受态细胞过程中,离心收集时可以提高转速,快速收集细胞
【判断题】When the phonoreceptor is hyperpolarized, there is increased release of glutamate.
【单选题】三维 立体包括:基本立体、复合立体、 _______ 、相贯式立体、 _______ 。