What is Mr. Mitchell particularly interested in（）

单项选择题What kind of company is Sinochem （）

A．It is the largest company in China.
B．It specializes in imports and exports of chemical products.
C．It primarily sells dyestuff and pigments.

单项选择题Where does Madam Li work（）

A．Branch of Sinochem in the U. S.
B．Sinochem in Canada.
C．Export Division No. 4.