某市辖区的一段长江大堤发生崩岸危险，情况十分危急。基干民兵张某接到人武部让他参加抢险突击队的通知后，却以“要干自家活”为由，拒绝参加，在群众中造成极坏影响。张某在紧急关头拒不履行义务，受到了法律的制裁。在这一案例中，张某错误地认为（ ）
A：拒不履行义务，就要受到法律的追究和制裁
B：公民自觉履行义务是热爱社会主义祖国的表现
C：享有权利是自己的事，履行义务是别人的事
D：每个公民在享有权利的同时，必须自觉履行义务
下列运算错误是（ ）
圆柱的体积等于和它等底等高的圆锥体积的3倍．（判断对错）
完形填空
I'm a Chinese boy. My name's Wu Qiang. I1 in Beijing now, because my 2work here. I 3in a high school, and I'm 4 Class 2, Grade 3. I usually 5 to school6bus. Sometimes I 7 a bike. My home is fifteen 8 from school. I don’t go to school 9 Saturdays and Sundays, so I always stay at home to do my homework, and it often 10 me half a day on Saturday. On Sunday I often go to the park with my parents. I have fun on weekends.
