【单选题】How do all food chains break?
A.
One kind of animals is eaten up.
B.
One kind of plants is destroyed.
C.
One kind of animals eats another.
D.
One of the links is destroyed.
【单选题】结核性腹膜炎患者,在抗结核治疗中出现失眠,神经错乱,可能由哪种药引起
【单选题】结核性腹膜炎患者,在抗结核治疗中出现失眠,神经错乱,可能由哪种药引起
【判断题】铰刀的切削厚度较小,磨损主要发生在后刀面上,沂以重磨沿后刀面进行。
【单选题】(The simplest) kind of plant, (alike) the simplest kind of animal, (consists of) (only one) cell.
【判断题】铰刀的切削厚度较小,磨损主要发生在后刀面上,所以重磨沿后刀面进行。