托福考试

【单选题】
A、water molecule consists of two hydrogen atoms attached to a single, larger oxygen atom. The angle between the two hydrogen atoms is 120 degrees--the same angle as the angles of a hexagon--which accounts for the characteristic six-sided structure of ice crystals.
2. The phrase accounts for in the passage means

A、explains
B．decreases
C．connects
D．summarizes

网考网参考答案：A
网考网解析：
Accounts for means explains in this context. Clues: ... 120 degrees--the same angle as the angles of a hexagon--which the characteristic six-sided structure document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>