下列对放射线治疗敏感性差的肿瘤为（）。
A．乳腺癌
B．恶性黑色素瘤
C．肾母细胞瘤
D．多发性骨髓瘤
E．性腺肿瘤
参考答案：B
My host family tried to cook ________ for me when I studied in New Zealand.
A．different something
B．different anything
C．something different
D．anything different
通常，幼苗和幼嫩的植株多向（）一方弯曲。
A.热源
B.水源
C.能源
D.光源
