用所给词的正确形式填空

1.Einstein has two ________(wife) in his life.

2.You are too tired. So the doctor hopes you can give up ________(work) and have a good rest.

3.He was ________(introduce) to my friends.

4.It is ________(say) that it will be sunny tomorrow.

5.Because of ________(Lily) hard-working, she went to a famous university.

某投资者准备用30000元进行投资活动。该投机者认为甲公司的股价可能在未来三个月内上涨。该公司当前的股价是12元/股，而期限为三个月、行使价为14元的看涨期权，目前每份价格为1元。 [要求] (1)假设该投资者将全部资金按照目前的股价购买了甲公司的股票，三个月后甲公司的股票上涨到18元/股，请计算该投资者的损益。 (2)假设该投资者将全部资金都购买了股票期权，三个月后甲公司的股票上涨到18元/股，请计算该投资者的净损益。 (3)假设该投资者将全部资金按照目前的股价购买了甲公司的股票，三个月后甲公司的股票下跌到8元/股，请计算该投资者的损益。 (4)假设该投资者将全部资金都购买了股票期权，三个月后甲公司的股票下跌到8元/股，请计算该投资者的净损益。