Silica gel is belongs to ___ adsorbent. A: non-polar B: polar C: semi-chemical D: alkaline E: chemical

Modern communications satellites use a variety of orbits, including ( ). A: geostationary orbits B: Molniya orbits C: elliptical orbits D: low (Polar and non-polar) earth orbits

对于下面问句回答正确的是： A: Non,iln’aimeparlerpasfrançais. B: Non,iln’aimepasparlefrançais. C: Non,ilAimeneparlerpasfrançais. D: Non,iln’aimepasparlerfrançais.

—Ya-t-ildeschaises?—Non,____________.

根据Disruptive theory,创新有()。 A: Disruptive B: non Disruptive C: Disruptive和non Disruptive都不对 D: Disruptive和non Disruptive都选

By saying "Spring is usually prime food time for 1,200 polar bears" ( Line 1, Para. 1 ), the author means that ______. A: spring is usually a good time for polar bears to carry out their mating rituals B: the polar bears usually eat a lot in the spring C: spring is generally a good time to hunt polar bears D: polar bears usually hibernate in the spring

How is the future of polar bears?

Non participatory and interactive speaking and

The allergic reaction produced by the drug depends on A: Pharmacodynamic properties B: Pharmacokinetic properties C: Both A and B D: Non A non B

Etes-vous Japonais? Non, je suis ____.