【单选题】How many kinds of illnesses can be caused by the germs in swimming pool water as mentioned in the passage?
【判断题】具有发展风力发电潜力的是我国的西北地区。()
【单选题】建立施工坐标系统时应以主轴线的起端点作 ( )。
【单选题】There are so many kinds of cameras in the shop. We can't decide . [ ]
【单选题】How many kinds of ideas are there about the future?
【单选题】建立施工坐标系统时应以主轴线的起端点作()。
【单选题】How many kinds of migrating mammals are mentioned in the passage?
【单选题】How many kinds of anxiety are mentioned in the passage?