问题
选择题
It is said that a reliable treatment for the disease will be applied at least two or three months away and still it ______on animals.
A．is testing
B．has tested
C．is being tested
D．has been tested
答案
答案：C
题目分析：考查时态语态：句意：据说这个病的可靠的治疗将在两三个月后应用，并仍然在动物身上被检测。从前面的句子：the disease will be applied at least two or three months away可知现在正在动物身上被检测。用现在进行时的被动，选C。