187.When there are small differences between the heights of two successive high tides or two successive tides, the tides are called _____.

207. Spring tides occur_____

96. The datum from which the predicted heights of tides are reckoned in the tide tables is _____.

The land-sealed Mediterranean sea, with the shallow export channel, the small tides, the calm sea surface, is very deep, the salt content is particularly low, and the coastal currents are formed deep

Mean high water is the average height of（）. A: The higher high waters B: The lower high waters C: The lower of the two daily tides D: All high waters

Mean high water is the average height of（）. A: The higher high waters B: The lower high waters C: The lower of the two daily tides D: All high water

Time can be defined in the following ways except _______. A: schedule of an business appointment B: the rise and fall of tides C: the revolution of the moon around the earth D: an important victory in battle

In this ocean of information, it places a greater responsibility on us to be critical consumers of information, which means that we need to always keep（ ）in mind as we process tides of information, and act accordingly. A: Relevance and accuracy B: Specific and informed C: Interactive and precise D: Informed and understanable

The two main problems in Venice are ____________________. A: too many old residents and too many rich people B: too many bridges and too much water from high tides C: high water and too many tourists D: expensive souvenirs and too many tourists

According to the passage, what is believed to cause the thin<br/>lines seen on Europa’s surface? ___ A: A long period of extremely high tides B: Water breaking through from beneath the surface ice C: The continuous pressure of slush on top of the ice D: Heat generated by the hot rocky core