【单选题】6x^4+19x^3-7x^2-26x+12的有理根有多少个?()
【简答题】锥体束包括________和皮质脊髓束,前者经过内囊________,终止于________,后者经内囊________,终止于________。
【判断题】The more time tourists have, the more travel propensity they have. The structure of free time has nothing to do with travel.
【判断题】游泳中造成呼吸不畅的原因是呼吸过程太长。A. 对 B. 错误