—Nearly 10 years. That's _______ this book is so classical and famous.
A:How long,why
B:How much,because
C:How long,because
D:How much,why
在三个相同的烧杯里装入质量相等的甲、乙、丙三种不同的液体,把一支装有适量铁砂的平底试管先后放入这三个烧杯中,静止后如图所示.下列说法正确的是( )
根据WTO的最惠国待遇原则,各成员国(地区)应该( )
—It ___________ be Tom. He has gone to his hometown to visit his grandparents.