53.According to this text, edX is _______. (A)a part of the free MIT OpenCurseWare (B) a free computer program by MIT and Harvard (C) a Harvard-MIT platform of free online courses (D)a free program online for universities worldwide

57.What is the key information the author wants to give in Paragraph 1? (A)Plants’ reaction to weather could have damaging effects on ecosystem. (B) The increasing speed of flowering is beyond scientists’ expectation. (C) Cimate change leads to the change of food production patterns. (D)Food chains have been seriously damaged because of weather.

53.According to this text, edX is _______. (A)a part of the free MIT OpenCurseWare (B) a free computer program by MIT and Harvard (C) a Harvard-MIT platform of free online courses (D)a free program online for universities worldwide

其他試題

53.According to this text, edX is _______.
(A)a part of the free MIT OpenCurseWare
(B) a free computer program by MIT and Harvard
(C) a Harvard-MIT platform of free online courses
(D)a free program online for universities worldwide