When there was no place in the whole field ____________________（leave) to dig, the rabbit dug a tunnel right to where the dog had been lying all the time.

Mary saw her son ______ the piano when she came to the room.

A．playing

B．play

C．played

D．to play

A.Anthony fixed it.

B.The plumber fixed it.

C.It worked again when the plummet arrived.

D.It was removed.

When the plane was going up, the air hostess told Henry not to worry about ______.

A．the plane

B．the strange feeling

C．his seat

D．his health

When the plane was going up, the air hostess told Henry not to worry about ______.

A．the plane

B．the strange feeling

C．his seat

D．his health

Mary saw her son ______ the piano when she came to the room.

A．playing

B．play

C．played

D．to play

A.Anthony fixed it.

B.The plumber fixed it.

C.It worked again when the plummet arrived.

D.It was removed.

When does the feeling of forward motion stop？

A．When the plane stops climbing.

B．When the plane lands.

C．When there is no longer a change in speed.

D．When we begin to feel speed.

The mice in northern Europe move when ______.

A．they give birth

B．the weather is bad

C．the place gets too crowded

D．they haven't enough food

A. It is a server-side PL/SQL procedure.

B. When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.

C. It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).

D. It would fail if another background engine process is started to handle the same type of activities within the same item type.

E. During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.

When Columbus reached the New World, corn was the ______ in America.

A．widely most grown plant

B．most widely grown plant

C．most grown widely plant

D．plant widely grown most

完成以下PL/SQL块，功能是：使用游标，显示所有单价低于250元的玩具的单价。

DECLARE

my_toy_price toys.toyprice%TYPE; CURSOR toy_cur IS

SELECT toyprice FROM toys WHERE toyprice<250; begin

______________ LOOP

________________________________________ EXIT WHEN toy_cur%NOTFOUND;

DBMS_OUTPUT.PUT_LINE (toy_cur%ROWCOUNT || '. 玩具单价:' || my_toy_price); END LOOP;

CLOSE toy_cur; END;