马某的女儿今年才7岁，很有绘画的天分，在一次几省市举行的儿童绘画比赛中获得一等奖，并被选送出国比赛。某出版社没经过马某的同意将这幅画印刷出版。当马某得知这一消息后．找出版社要样书。出版杜的编辑说，我们出版社出版儿童画是为了鼓励儿童画画，你女儿才7岁，没有著作权，要书请花钱买。

阅读材料，回答以下问题：

⑴What is Tom doing ?  ____                                      A、Follow the rules .

⑵Are they going to watch films next week ?____      B、By bus .

⑶Do you want to visit Shanghai or Nanjing ?____    C、He is flying kites .

⑷When will Miss Li go to Hai nan ?____                    D、No . They are going to play basketball .

⑸How long did you stay in China ?____                    E、Because it must wait for the man .

⑹Let's cross the street now .____                              F、Next week .

⑺What would you like ?____                                     G、I want to visit Shanghai .

⑻Why does the car stop ?____                                 H、We stayed there for three weeks .

⑼How can you get to the zoo ? ____                        I、Ok . Let's go .

⑽What must I do for the traffic ? ____                     J、A few eggs .

梦：____、____    森：____、____

拉：____、____    灵：____、____

在学校科技月活动中，科技小组的同学设计了一个小型锅炉，其部分结构如图所示。下面是对锅炉结构的介绍：调控水箱高1.5m，其中带有浮球C的横杆ODC（C为浮球的中心）能绕O点转动，DC=28cm，OD=2cm；T=30N时，ODC杆处于水平时阀门B堵住进水口；圆柱体A是锅炉的安全阀，其底面积为10cm²，加热过程中安全阀堵住出气孔，调控水箱与锅炉炉体始终连通，当锅炉内气压超过1.2×10⁵Pa时，圆柱体A被顶起，排出部分蒸汽。已知外界大气压为1.0×10⁵Pa。（不考虑阀门B.横杆ODC及浮球受到的重力，g取10N/kg）根据以上介绍和已知条件，下列说法正确的是（    ）