【简答题】How many kinds of doctors are there in the US?
【单选题】How many kinds of illnesses can be caused by the germs in swimming pool water as mentioned in the passage?
【简答题】How many kinds of fish are there in the world? _________________.
【简答题】How many kinds of materials will the university send the applicant after they receive the application materials? The university will sand the applicant ______ kinds of material.
【判断题】浓酸能溶解许多有效态的微量元素,是测定时常采用的浸提剂。( )
【单选题】There are so many kinds of cameras in the shop. We can't decide . [ ]
【简答题】How many different kinds of sounds are mentioned in Paragraph 3 ?
【简答题】How many kinds of lessons do they have in a week?( )