【单选题】In a clearing at the centre of the thicket stood the Tonnerre family's ______.
【单选题】The article published in The Lancet Infectious Diseases found that
A.
a new multi -drug resistant bacterium has appeared
B.
some bacteria have developed a new gene to resist almost all antibiotics
C.
some infections are caused by antibiotics
D.
some countries are successful in controlling multi -drug resistant microorganisms
【单选题】“中国中央电视台”的英文缩写是:____________.
【简答题】将一组数据中的每一个数据都减去10得到一组新的数据,如果这组新数据的平均数和方差分别为1.2和0.4,那么原来一组数据的平均数和方差分别为______和______.
【单选题】What will happen if there is one commercial bank and no thrifts in a small town?
A.
The residents will deposit their money with the bank.
B.
The local bank will provide business loans to the commercial bank.
C.
Some large banks will transport money by check to the bank.
D.
People in the area will not deposit money with the bank.
【简答题】一组数据的方差为1/23,若将该组数据中的每一个数都减去10得到一组新数据,则该组新数据的方差为